Definition of macrophyllous in US English:

macrophyllous

adjective

Botany
  • Having large or long leaves or fronds; (of a leaf) large; specifically (in the Raunkiaer system of leaf size classification) designating a leaf with a surface area of 180–1640 square centimetres, or a plant bearing such a leaf.

Origin

Mid 19th century; earliest use found in Robert Mayne (1808–1868). From macro- + -phyllous, probably after scientific Latin macrophyllus (as a specific epithet); compare Hellenistic Greek μακρόϕυλλος, and microphyllous.

Pronunciation

macrophyllous

/ˌmakrə(ʊ)ˈfɪləs/