noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Either of two isomeric derivatives of cytosine in which a -CH= group is replaced by -N=; the 5- isomer inhibits the action of DNA-methyltransferases

Etymology

From aza- + cytosine.

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