noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A condition in which the end of the thumb is widened and flattened, the nail plate is flattened, and the distal phalanx is abnormally short. uncountable

Etymology

From brachy- + onychia.

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