adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The antimatter counterpart of oxygen. Made up of positron and antiprotons instead of electrons and protons. uncountable, usually

Adjective

1. 1
   antioxidant not-comparable

Etymology

From anti- + oxygen.

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