benzophenanthridine

English

Etymology

benzo- +‎ phenanthridine

Noun

benzophenanthridine (countable and uncountable, plural benzophenanthridines)

1. (organic chemistry) A tetracyclic aromatic heterocycle composed of a benzene ring fused with a phenanthridine residue
2. (organic chemistry) Any of a large class of alkaloids based on this structure