/sal'euh sil al"deuh huyd'/ , n. Chem.
an oily, slightly water-soluble liquid, C 7 H 6 O 2 , having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.
Also, salicylic aldehyde .
[ 1865-70; salicyl (see SALICYLIC) + ALDEHYDE ]