Standard Lemma guide

polyatomic

adj · 2 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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1

adj

Meaning 1

(of a molecule or ion) Consisting of two or more atoms.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adjective

Meaning 2

of or relating to a molecule made up of more than two atoms

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *pleh1- Proto-Indo-European *polh1ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- English atomic English polyatomic From poly- + atomic.

Across languages

Translations

5 source translations are retained for this English entry.

  • Azerbaijani: çoxatomlu — consisting of two or more atoms
  • Bulgarian: многоатомен (mnogoatomen) — consisting of two or more atoms
  • Italian: poliatomico — consisting of two or more atoms
  • Kyrgyz: көп атомдуу (köp atomduu) — consisting of two or more atoms
  • Russian: многоа́томный (mnogoátomnyj) — consisting of two or more atoms