adjective
"pyroterebic acid" an unsaturated, oily carboxylic acid, prepared by distilling terebic acid.
Systematic name: 4-methyl-3-pentene-1-carboxylic acid; (CH₃)₂C=CHCH₂COOH.
Origin
Mid 19th century; earliest use found in Henry Watts (1815–1884), chemist.
Are You Learning English? Here Are Our Top English Tips