English

isodurene

iso- + durene

Formed from iso- + durene

Ancient Greek ἴσος ‘equal’

English iso-

Proto-Indo-European *dweh₂- ‘long, distant’

Proto-Indo-European *dweh₂rós ‘long’

Latin durus ‘hard’

Today it means

noun 1,2,3,5-tetramethylbenzene, a flammable aromatic hydrocarbon found naturally in coal tar.

Language periods are conventional ranges, not dates for this word.

Etymograph / isodurene