IPA: //ˈækrəˌliːn//
KK: /ˈækrəˌlin/
A clear, colorless liquid that has a strong, unpleasant smell and can be harmful. It is used mainly in chemical reactions to make other substances.
Acrolein is used in the production of various chemicals and as a herbicide.
Acrolein is derived from the Greek "akros" (meaning sharp or bitter) and "olein" (from "olea", meaning oil). The term refers to a sharp, pungent compound that is an unsaturated aldehyde derived from glycerol, often associated with a strong odor, similar to that of burnt fat or oil.
Think of 'sharp' ('akros') to remember that acrolein has a sharp, pungent smell, much like burnt oil.