Polyatomic

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    (of a molecule or ion) Consisting of three or more atoms.
Adjective
  1. 1
    of or relating to a molecule made up of more than two atoms wordnet

Etymology

From poly- + atomic.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.