noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The condition of having two mammae or teats. dated, rare, uncountable

Synonyms

All synonyms

bimastia

Etymology

From bi- + Ancient Greek μαστός (mastós, “breast”) + -ism.

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