/par'euh fawr mal"deuh huyd', -feuhr-/ , n. Chem.
a white, crystalline polymer of formaldehyde, (HCOH) n , from which it is obtained by evaporation of the aqueous solution: used chiefly as an antiseptic. Also called paraform /par"euh fawrm'/ .
[ 1930-35; PARA- 1 + FORMALDEHYDE ]