English
heptahelicene
From hepta- + helicene.
A compound of hepta- + helicene
Proto-Indo-European *septḿ̥ ‘seven’
Proto-Hellenic *heptə́ ‘seven’
Ancient Greek ἑπτά ‘seven’
English hepta-
Today it means
noun The helicene having seven benzene rings fused into a flat spiral
Language periods are conventional ranges, not dates for this word.
Etymograph / heptahelicene