Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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adj
Of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 488 to 443 million years ago.
Definition source: English Wiktionary via Wiktextract
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
The Ordovician period.
Definition source: English Wiktionary via Wiktextract
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Ordovician period
Antonyms: none provided
Broader terms: period, geological period
History
Etymology tree Proto-Indo-European *h3erg-der.? Proto-Indo-European *dheh1-der.? Proto-Celtic *ordosder. Proto-Indo-European *weyk-der. Proto-Celtic *wiketider. Latin Ordovīcēslbor. English Ordovices Proto-Indo-European *-nós Proto-Italic *-nos Latin -nus Latin -ānus Latin -iānusbor. English -ian English Ordovician From Ordovices + -ian. Coined by English geologist Charles Lapworth in 1879 after the Celtic tribe of the Ordovices.
Across languages
18 source translations are retained for this English entry.
