Definition of pulveraceous in English:

pulveraceous

Pronunciation /ˌpʌlvəˈreɪʃəs/

adjective

rare Botany
  • Covered or appearing to be covered with powder; mealy.

Origin

Mid 19th century; earliest use found in Asa Gray (1810–1888), botanist. From post-classical Latin pulveraceus + -ous.