angelic acid
an·gel·ic acid
noun \(ˌ)an-ˌjel-ik-\Definition of ANGELIC ACID
: an unsaturated crystalline acid C5H8O2 that occurs as an ester especially in angelica root and together with tiglic acid in oil from the common European chamomile (Anthemis nobilis)
Seen & Heard 
What made you want to look up angelic acid? Please tell us where you read or heard it (including the quote, if possible).
