Copyright © Philip M. Parker, INSEAD. Terms of Use.
Definition: Silurian |
SilurianNoun1. From 405 million to 425 million years ago; first air-breathing animals. Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. |
Date "Silurian" was first used: 1708. (references) |
| Domain | Definitions |
Mining | A period of the Paleozoic, thought to have covered the span of time between 440 and 400 million years ago; also, the corresponding system of rocks. The Silurian follows the Ordovician and precedes the Devonian; in the older literature, it was sometimes considered to include theOrdovician. It is named after the Silures, a Celtic tribe. (references) |
Science | A period in the geologic time scale that spans from 438 to 408 million years ago. (references) |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
This period is part of thePaleozoic era. |
Cambrian |
Ordovician |
Silurian |
Devonian |
Carboniferous |
Permian |
Silurian naming
The Silurian system was first described by Sir Roderick Murchison in the 1830s based on rocks in South Wales. It is named for a Welsh Celtic tribe -- the Silures. The series quickly came to overlap Adam Sedgwick's Cambrian sequence. Lapworth eventually resolved the conflict by defining a new Ordovician system including the contended beds.Silurian dating
The Silurian is a Geologic Period that extends from about 408.5 to 443.5 million Years before the present. As with most other geologic periods, the rock beds that define the start and end are well identified, but the exact dates of the start and end of the period are uncertain by 5-10 million years. The Silurian period follows the Ordovician and is followed by the Devonian period. The base of the Silurian is set at a major extinction event where 60% of marine species were wiped out.Silurian subdivisions
The Silurian is usually broken into Lower and Upper subdivisions, however some workers do use a Lower/Middle/Upper breakdown. The Faunal stages from youngest to oldest are:
Silurian paleogeography
During the Silurian, Gondwana remained in high Southern latitudes, but there is evidence that the Silurian icecaps were less extensive than those of the late Ordovician. The other continents drifted together near the equator starting the formation of a second supercontinent known as Laurasia.
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Silurian."
Synonym: SilurianSynonym: Silurian period (n). (additional references) |
| Context | Synonyms within Context (source: adapted from Roget's Thesaurus). |
Oldness | Precambrian, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, |
| Source: adapted from Roget's Thesaurus. | |
Crosswords: Silurian |
| English words defined with "Silurian": Age of invertebrates, anaspid, Asaphus, Atrypa ♦ Calciferous epoch, Calymene, Canadian period, Chaetetes, Chain coral, Chazy epoch, Cincinnati epoch, Cliff limestone, Cumbrian system ♦ Dalmania, Delthyris, Delthyris limestone, Devonian age ♦ Eophyte, Eurypterus ♦ Favosites ♦ Graptolite ♦ Halysites, Heliolite, heterostracan ♦ Lingula flags, Llandeilo group, Ludlow group ♦ Maclurea, Medina epoch ♦ Niagara period, Nidulite ♦ Oriskany, Oriskany period ♦ Pentamerus, Pentamerus limestone, Phacops ♦ Quebec group ♦ Saliferous rocks, Salina period, Silurian period ♦ Taconic, Tilestone, Trenton period, Trilobite, Trinucleus ♦ Wenlock group. (references) |
| Specialty definitions using "Silurian": Downtonian ♦ Ontarian ♦ Siluria, Silurian Rocks. (references) |
| Non-English Usage: "Silurian" is also a word in the following language with the English translation in parentheses. Albanian (Silurian). |
| Domain | Title |
Books |
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Source: compiled by the editor from various references; see credits. | |
| Thumbnail | Description & Credit |  | Waukesha, Wis., Bethesda Springs, Silurian Spring. Credit: Library of Congress. |
Source: pictures compiled by the editor from various references; see picture credits. | |||
| "Silurian" is generally used as a noun (proper) -- approximately 59.72% of the time. "Silurian" is used about 72 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted) |
| Parts of Speech | Percent | Usage per 100 Million Words | Rank in English |
| Noun (proper) | 59.72% | 43 | 52,181 |
| Adjective (general or positive) | 40.28% | 29 | 64,444 |
| Total | 100.00% | 72 | N/A |
Source: compiled by the editor from several corpora; see credits.
Expression using "Silurian": Silurian period. Additional references. | |
| Hypenated Usage | |
Ending with "Silurian": Mid-silurian. | |
| Source: compiled by the editor from various references; see credits. | |
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
silurian period | 13 |
silurian | 9 |
line period silurian time | 9 |
| Source: compiled by the editor from various references; see credits. | |
| Language | Translations for "Silurian"; alternative meanings/domain in parentheses. | ||||||||||||||||||||||||||||||||||||||||||||||
Albanian | Silurian. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Bulgarian | Силурски Период, Силурски, Силур. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Dutch | Silurium. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Esperanto | Siluro, Silurio. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
French | silurien. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
German | Silur system, Silur. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Hungarian | Sziluri, Szilur Kor. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Italian | Siluriano. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Manx | Shillooragh. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
Pig Latin | iluriansay Silúrico. (various references) Силурийский Период, Силурийский. (various references) silurski, silur. (various references) Siluriano, silúrico, período siluriano, período silúrico. (various references) Silur. (various references) Силурійський Період, Силурійський. (various references) kỷ silua. (various references) | ||||||||||||||||||||||||||||||||||||||||||||||
| Language | Period | Translations |
| Latin | 500 BCE-Modern | Silures. (various references) |
| Source: compiled by the editor from various references. | ||
Misspellings | |
"Silurian" is suggested in spellcheckers for the following: Isflurane, salarian, Siluria, Souleiman. (additional references) | |
| Source: compiled by the editor, based on several corpora (additional references). | |
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-i-i-l-n-r-s-u" | |
-1 letter: insular, urinals. | |
-2 letters: lunars, raisin, urials, urinal. | |
-3 letters: airns, anils, arils, auris, lairs, laris, liars, liras, lunar, lunas, nails, naris, nurls, rails, rains, ranis, rials, ruins, sarin, slain, snail, snarl, sural, ulans, ulnar, ulnas, unais, urial. | |
-4 letters: ails, ains, airn, airs, anil, anis, anus, aril, ilia, inia, iris, lain, lair, lari, lars, liar, lins. | |
| Words containing the letters "a-i-i-l-n-r-s-u" | |
+2 letters: industrial, insularism, insularity, luminaires, luminarias, luminaries, ruralising, urinalysis. | |
+3 letters: brutalising, culinarians, illusionary, industrials, insalubrity, insularisms, jubilarians, multigrains, seigneurial, semidiurnal, singularity, singularize, unclarities, unrealistic, unrealities, unspiritual, vulgarising. | |
+4 letters: albuminurias, angularities, californiums, circulations, elutriations, equilibrants, illuminators, illustrating, illustration, industrially, insalubrious, insularities, insurability, journalistic, lubrications, naturalising, naturalistic, neutralising, neutralistic, neutralities, popularising, quadrillions, sanguinarily, secularising, secularizing, singularized, singularizes, stridulating, stridulation, sublibrarian, subprincipal, supraliminal, tranquilizes, tribulations, trifluralins, unhistorical, universalism, universalist, universality, universalize, unmoralities, utilitarians, vainglorious. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)53 69 6C 75 72 69 61 6E |
| Leonardo da Vinci (1452-1519; backwards) (references)
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| American Sign Language (origins from 1620-1817 in Italy and, especially, France) (references)
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| Semaphore (1791, in France) (references)
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| Braille (1829, in France) (references)
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Morse Code (1836) (references)... .. .-.. ..- .-. .. .- -. |
| Dancing Men (Sir Arthur Conan Doyle, 1903) (references)
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Binary Code (1918-1938, probably earlier) (references)01010011 01101001 01101100 01110101 01110010 01101001 01100001 01101110 |
HTML Code (1990) (references)S i l u r i a n |
ISO 10646 (1991-1993) (references)0053 0069 006C 0075 0072 0069 0061 006E |
| British Sign Language (Fingerspelling, BSL; 1992, British Deaf Association Dictionary of British Sign Language) (references)
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Encryption (beginner's substitution cypher): (references)5375788784756780 |
| Language | Coverage | Language Translations |
Albanian | fjalor, qartësi, përcaktim, saktësi, transmetim, transferim | shqip, албанец, албански език, албански, Albanees, Albanais, albaner, albán, albanese, Albaneagh, albanês, албанский, albanski, albanac, albanés, Arnavut, албанський, албанка, албанець |
Bulgarian | речник, яснота, сила, очертания, дефиниция, транслация, превеждане, предаване, поддаване, тълкуване, огъване, превод | bulgr, български, български език, българин, bulgare, bolgár, bulgaro, Bulgeyragh, Bulgeyrish, болгарский, болгарин, bugarski jezik, bugarski, bugarka, bugarin, búlgaro, bulgaristan ile ilgili, болгарський, người Bun-ga-ri tiếng Bun-ga-ri |
Dutch | woordenboek, definitie, translatie | holandez, холандски, немски език, холандски език, холандците, немски, néerlandais, holländisch, holland, olandese, Ollanish, Germaanish, holandês, голландский, holanđanin, u škripcu, holandski, holandés, alman, eş, flemenkçe, holandaca, hollanda, karı, hollandalı, hollandalılara özgü olan, Hollandali, hollanda'ya ait, голландська мова, голландський, ngôn ngữ khó hiểu, "b xã" |
Esperanto | vortaro, difino, traduko | есперанто, esperanton, espéranto, eszperanto, eszperantó, эсперанто, esperanto, esperanto dili, tiếng etperantô |
French | dictionnaire, définition, traduction | frëngjishte, frëng, franceze, френски език, френски, français, französisch, francia, francese, Ny Frangee, Mooinjey ny Frank, francês, французский, francuski jezik, francuski, francuzi, francés, fransızca, fransız, Fransiz, fransızca ile ilgili, fransa ile ilgili, французька мова, французький |
German | Übersetzung, Wörterbuch, Definition | gjerman, германски, немски език, немски, немец, роден, готически, германец, Duitse, allemand, német, tedesco, Germaanish, Germaanagh, Garmane, Carmane, alemão, немецкий, germanski, alemán, alman, німкеня, німецький, німець, $sisters german$ chị em ruột, $cousin german$ anh chị em con chú bác ruột, sister |
Hungarian | szótár, meghatározás, definíció, fordítás | унгарски език, унгарски, унгарец, Hongaarse, hongrois, Ungar, magyar, ungherese, Ungaarish, Ungaaragh, венгр, венгерский, mađarski jezik, mađarski, mađar, húngaro, macarca, macar, угорська мова, угорський, угорка, угорець, người Hung-ga-ri tiếng Hung-ga-ri |
Italian | dizionario, definizione, traduzione | италиански език, италиански, италианец, italien, italienisch, olasz, italiano, Iddaalish, итальянский язык, итальянец, итальянский, italijan, italijanski jezik, italijanski, italyanca, italyan, італі"ць, італійська мова, італійський, італійка |
Manx | fockleyr, geyrid, meenaghey, keeayllaght, baght | gjuha e popullsisë së ishullit men, manx, mann-szigeti nyelv, Manninish, Manninagh, Gaelgagh, Yn Ghaelg, язык жителей о-ва мэн, с о-ва мэн, s ostrva mana, los habitantes de la isla de man, lengua de la isla de man, de la isla de man, man adası, man dili, менський, менський діалект |
Portuguese | dicionário, definição, tradução | portugez, portugalisht, португалски, португалски език, португалец, portugais, portugiesisch, portugál, portoghese, Portiugish, Portiugagh, português, португальский, portugalski jezik, portugalac, portugalski, portugués, portekizce, portekiz, Portekízlí, portekizli, португальський, португальська мова, португалець, người B"-đ o-nha tiếng B"-đ o-nha |
Russian | словарь, определение, трансляция, сдвиг, перевод, перемещение | руски език, руски, руснак, Russe, russisch, orosz, russo, Rooshish, Rooshagh, русский, ruski jezik, ruski, ruso, Rusça, росіянка, росіянин, російська мова, російський, người Nga tiếng Nga |
Serbo-Croatian | leksikon, rečnik, definicija, tumačenje | serbokroatisch, servo-croata, srpsko-hrvatski jezik, srpsko-hrvatski |
Spanish | diccionario, definición, traducción | spanjoll, испански език, испански, Spaans, espagnol, spanisch, spanyol, spagnolo, Spaainish, Spaainagh, espanhol, испанский, španski, španski jezik, español, ispanyollar, ispanyol, ispanyolca, іспанський, іспанська мова |
Turkish | sözlük, ansiklopedik sözlük, açıklama, belirleme, belirtme, kesinleştirme, tanım, tarif, seçiklik, tanımlama, tercüme | turk, турски език, турски, turque, türkisch, török, Yn Turkish, Turkagh, турецкий, turski jezik, turski, turco, türkçe, türk, турецький, турецька мова, tiếng Thổ nhĩ kỳ |
Ukrainian | словник, довідник, чіткість, тлумачення, виразність, визначення, дефініція, ясність, чітка чутність, процес перекладу, переклад, пояснення, переміщення | ukrainisht, ukrainas, украинец, украински език, Oekraïens, ukraino, ukraina, ukrainien, ukrainisch, ukrainerin, Ukrainer, ukrán, ucraino, Ookraanagh, Ookraanish, ucraniano, украинский язык, украинский, украинец украинский, ukrajinski, ukrajina, ucranio, ukraynalı, ukrayna, ukraynaca, український, українець, người U-kren tiếng U-kren |
Vietnamese | có tính chất sách vở, sự định rõ, sự định nghĩa, lời định nghĩa sự định, sự dịch, sự biến th nh sự giải thích | vietnamisht, vietnamez, виетнамски език, виетнамски, vietnamien, vietnamesin, vietnamesisch, vietnamese, vietnami, vietnámi, vietnamita, вьетнамский, vijetnamski jezik, vijetnamski, vijetnamac, vietnamlı, vietnam dili, vietnam, в'"тнамець, в'"тнамський, người Việt nam tiếng Việt |
English | Dictionary, Definition, Translation | anglezët, anglez, gjuhë zngleze, anglishte, anglisht, английски език, английски, англичаните, anglan, anglais, englisch, angol, inglese, Sostynagh, Sostnagh, Baarlagh, inglês, английский, engleski, englez, engleski jezik, inglés, ingiltere, ingiliz, Íngílízce, ingilizce, Íngílíz, ýngilizce, англійський, англійці, англійська мова |
| 1. Definition 2. Synonyms 3. Crosswords 4. Usage: Commercial | 5. Images: Slideshow 6. Images: Photo Album 7. Usage Frequency 8. Expressions | 9. Expressions: Internet 10. Translations: Modern 11. Translations: Ancient 12. Derivations | 13. Anagrams 14. Orthography 15. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
