noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A flat polycyclic aromatic hydrocarbon, isolated from coal tar, consisting of four fused benzene rings. countable, uncountable

Synonyms

All synonyms

isochryseneisochrysene

Etymology

From tri- + phenylene.

Related phrases

benzene ringcoal tar

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.