noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A naturally-occurring amino acid, present in several enzymes, whose structure is that of cysteine but with the sulfur atom replaced by one of selenium countable, uncountable

Etymology

From seleno- + cysteine.

Related phrases

amino acid

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