† oleoptenen. [ < oleo-comb. form + ancient Greek πτηνός winged, volatile (see ptenoglossateadj.)] ChemistryObsoleterare the liquid part of a volatile oil, as contrasted with the crystallizable part.Apparently only attested in dictionaries or glossaries.
ΚΠ
1864 Webster's Amer. Dict. Eng. Lang.Oleoptene, the liquid portion of a volatile oil; elaopten.