Definition of primulaceous in English:

primulaceous

adjective

Botany
  • Relating to or denoting plants of the primrose family ("Primulaceae").

    • ‘Especially noticeable in this respect are the flowers of Centunculus minimus, a tiny Primulaceous plant, whose cup-shaped corolla is carpeted at the bottom with slightly-arched, large, juicy, superficial cells, which glitter like silver in the sun.’
    • ‘Floral appendages on all four whorls are reduced to a relatively small number, in this case five, i.e., the primulaceous flower is fully pentamerous.’

Origin

Mid 19th century: from modern Latin Primulaceae (plural), based on medieval Latin primula (see primula), + -ous.

Pronunciation

primulaceous

/ˌprimyəˈlāSHəs/