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
Pertaining to Hades or hell.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Synonyms: Plutonian, Plutonic, Tartarean, Acherontic, infernal, Hadean, hellish, helly, stygian, subtartarean
Antonyms: none provided
adj
Of or relating to the Hadean geological eon.
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 Hadean eon; part of the Precambrian supereon, spanning from around 4.6 to 4 billion 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
adjective satellite
of or relating to or characteristic of Hades or Tartarus
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Plutonian, Tartarean
Antonyms: none provided
noun
the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Hadean time, Hadean eon, Hadean aeon, Priscoan, Priscoan eon, Priscoan aeon
Antonyms: none provided
Broader terms: eon, aeon
History
From Hades + -an, from Ancient Greek ᾍδης (Hāídēs). By surface analysis, had- + -e- + -an.
Across languages
17 source translations are retained for this English entry.
