Heteroatom

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any atom which is not carbon or hydrogen.
  2. 2
    Any atom in a heterocyclic ring (or other structure normally built of carbon atoms) that is not a carbon atom.

Etymology

From hetero- + atom.

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