The Collaborative International Dictionary
Formyl
Formyl \For"myl\, n. [Formic + -yl.] (Chem.)
A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde.
Formerly, the radical methyl, CH3.
Wiktionary
formyl
n. (context organic chemistry English) The univalent radical -CHO, derived from formaldehyde, that is characteristic of aldehydes
Usage examples of "formyl".
These comprise most of the basic dyes, such as Thioflavine T, Safranine, Brilliant Green, Methyl Violet, Magenta, New Methylene Blue, Bismarck Brown, Rose Bengale, Phloxine, Acid Greens, Formyl Violet S 4 B, Rhodamine, Solid Blue, etc.