noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Four arsenic atoms in a compound in-compounds, uncountable
2. 2
   The molecule that constitutes yellow arsenic. (As₄) uncountable

Etymology

From tetra- + arsenic.

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