† octophyllousadj. [ < octo-comb. form + -phyllouscomb. form, after scientific Latin octophyllus (1790 as a specific epithet)] BotanyObsoleterare (of a compound leaf) consisting of eight leaflets.Apparently only attested in dictionaries or glossaries.
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1857 R. G. MayneExpos. Lexicon Med. Sci. (1860) Octophyllus, composed of eight folioles..octophyllous.