D defs.my
Entry 1 sense Webster, 1913

Formalin

· For·ma·lin · IPA
01 n. An aqueous solution of formaldehyde, used as a preservative in museums and as a disinfectant.
  1. 1.
    An aqueous solution of formaldehyde, used as a preservative in museums and as a disinfectant.(Chem.)