noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The antiparticle of a helion, consisting of two antiprotons and one antineutron.

Synonyms

All synonyms

antihelium-3 nucleus

Antonyms

All antonyms

helion

Etymology

From anti- + helion.

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