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 epoch within the Paleogene period from about 56 to 34 million years ago.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
The Eocene epoch.
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 58 million to 40 million years ago; presence of modern mammals
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Eocene epoch
Antonyms: none provided
Broader terms: epoch
History
From Ancient Greek ἠώς (ēṓs, “dawn”) + καινός (kainós, “new”) and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. Coined by English polymath William Whewell in 1831 for Charles Lyell, who introduced it in 1833 in his book Principles of Geology. By surface analysis, eo- + -cene.
Across languages
20 source translations are retained for this English entry.
