noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A protein that in humans plays a role in the formation of clots. countable, uncountable
2. 2
   a protein present in blood plasma; converts to fibrin when blood clots wordnet

Synonyms

All synonyms

factor i

Etymology

From fibrin + -o- + -gen.

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