English

isosteroidal

From iso- + steroidal of isosteroid + -al.

Ancient Greek ἴσος ‘equal’

English iso-

Proto-Indo-European *weyd- ‘to see’

Proto-Indo-European *wéydos ‘seeing’

Proto-Hellenic *wéidos

Ancient Greek εἶδος

English steroid

Today it means

adj Having an isomeric side chain

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

Etymograph / isosteroidal