ALDEHYDE Meaning of ALDEHYDE in English Say it(RCHO) An aldehyde is an organic compound with a carbon bound to a -(C=O)-H group. Examples are formaldehyde (HCHO), acetaldehyde, CH 3 CHO, and benzaldehyde, C 6 H 6 CHO. General chemistry English glossary. Английский глоссарий общей химии. 2012