from the GNU version of the Collaborative International Dictionary of English
- adj. Of, pertaining to, or designating, an acid, C4H7CO2H (called also methyl crotonic acid), homologous with crotonic acid, and obtained from croton oil (from Croton Tiglium) as a white crystalline substance.
from The Century Dictionary and Cyclopedia
- Noting an acid, a colorless compound, , contained, in combination, in croton and certain other oils. It crystallizes in triclinic plates or rods, has an odor of benzoic acid, molts at 64.5° C, and boils at 198.5° C. Also called methyl-crotonic acid.
Sorry, no etymologies found.
The oil contains geraniol and citronellol, both free, and combined with tiglic, valeric, butyric, and acetic acids; also l-menthone.