noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A protein that reacts with fertilizin, causing sperm to adhere to the egg. uncountable
2. 2
   An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization. wordnet

Etymology

From anti- + fertilizin.

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