adj · name · 3 senses · updated from the 2026-07-25 local source snapshot
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
Pronunciation
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/ˈplaɪəsiːn/
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:P L AY1 AH0 S IY2 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Of a geologic epoch within the Neogene period from about 5.3 to 1.7 million years ago; marked by the appearance of humanity's first ancestors.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
name
Meaning 2
The Pliocene epoch.
Definition source: English Wiktionary via Wiktextract
Topics: geography, geology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Pliocene epoch
Antonyms: none provided
Broader terms: epoch
History
Etymology
From Ancient Greek πλείων (pleíōn, “more”) + καινός (kainós, “new”). Coined by English philosopher and historian of science William Whewell in 1831 for Charles Lyell, who introduced it in 1833 in his book Principles of Geology. By surface analysis, pleio- + -cene.
Across languages
Translations
17 source translations are retained for this English entry.
Catalan:
pliocè
— of the Pliocene epoch
Catalan:
pliocènic
— of the Pliocene epoch
Finnish:
plioseenikautinen
— of the Pliocene epoch
Georgian:
პლიოცენური
(ṗliocenuri)
— of the Pliocene epoch
Greek:
πλειόκαινος
(pleiókainos)
— of the Pliocene epoch
Hindi:
अतिनूतन युग
(atinūtan yug)
— of the Pliocene epoch
Polish:
plioceński
— of the Pliocene epoch
Catalan:
Pliocè
— geology, the Pliocene epoch
Czech:
pliocén
— geology, the Pliocene epoch
Dutch:
plioceen
— geology, the Pliocene epoch
Estonian:
pliotseen
— geology, the Pliocene epoch
Finnish:
plioseenikausi
— geology, the Pliocene epoch
Georgian:
პლიოცენი
(ṗlioceni)
— geology, the Pliocene epoch
Georgian:
პლიოცენური ეპოქა
(ṗliocenuri eṗoka)
— geology, the Pliocene epoch
Greek:
Πλειόκαινο
(Pleiókaino)
— geology, the Pliocene epoch