noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A formyl group (-CO-H, also called aldehyde), in which the hydrogen is substituted by a chlorine atom (-CO-Cl).

Etymology

From chloro- + formyl.

Related phrases

acyl chloride

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