Origin: A borrowing from Greek, combined with an English element. Etymons: Greek -ϕυλλος , -ous suffix.
Etymology: < ancient Greek -ϕυλλος (in e.g. μικρόϕυλλος having small leaves (see microphyllous adj.), ὀλιγόϕυλλος having few leaves (see oligophyllous adj. at oligo- comb. form ); < ancient Greek ϕύλλον leaf: see phyllo- comb. form) + -ous suffix, forming adjectives chiefly after post-classical Latin or scientific Latin adjectives ending in -phyllos or -phyllus in plant names (frequently used by Linnaeus and later botanists as specific epithets in binomials). Compare French -phylle . Compare -phyll comb. form.Formations occur from the late 17th cent. onwards, as pentaphyllous adj. at penta- comb. form 1, quadriphyllous adj. at quadri- comb. form 1, monophyllous adj., diphyllous adj., microphyllous adj., megaphyllous adj., etc. In the later sense, productive from the 19th cent., as epiphyllous adj., hypophyllous adj. at hypo- prefix 2. The first elements are usually ultimately of Greek origin, although instances of Latin elements occur (as biphyllous adj., quadriphyllous adj. at quadri- comb. form 1).
This is a new entry (OED Third Edition, March 2006; most recently modified version published online June 2020).