What is "salicylaldehyde"

n. (context organic compound English) The aromatic aldehyde ''2-hydroxybenzaldehyde''

Salicylaldehyde (2-hydroxybenzaldehyde) is the organic compound with the formula CHCHO-2-OH. Along with 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde, it is one of the three isomers of hydroxybenzaldehyde. This colorless oily liquid has a bitter almond odor at higher concentration. Salicylaldehyde is a key precursor to a variety chelating agents, some of which are commercially important.