noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The absence of breast tissue, nipple, and areola. uncountable

   "Amastia in girls can be treated with augmentation mammoplasty."

2. 2
   absence of the mammary glands (either through surgery or developmental defect) wordnet

Example

More examples

"Amastia in girls can be treated with augmentation mammoplasty."

Etymology

From a- (“without”) + -mastia (“breast”).

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