D defs.my
Entry 1 sense Webster, 1913

Crotonylene

/(kr?-t?n"?-l?n)/ · Cro·ton·y·lene · IPA
01 n. A colorless, volatile, pungent liquid, C4H6, produced artificially, and regarded as an unsaturated hydrocarbon of the acetylene series, and…
  1. 1.
    A colorless, volatile, pungent liquid, C4H6, produced artificially, and regarded as an unsaturated hydrocarbon of the acetylene series, and analogous to crotonic acid.(Chem.)