D defs.my
Entry 1 sense Webster, 1913

Crotonic

/(kr?-t?n"?k)/ · Cro·ton·ic · IPA
01 a. Of or pertaining to, or derived from, a plant of the genus Croton, or from croton oil.
  1. 1.
    Of or pertaining to, or derived from, a plant of the genus Croton, or from croton oil.
Phrases & compounds
Crotonic acid — a white crystalline organic acid, C3H5.CO2H, of the ethylene, or acrylic acid series. It was so named because formerly supposed to exist in croton oil. Also, any acid metameric with crotonic acid proper.