onagraceous Meaning, Definition & Usage

On`a*gra"ceous, On`a*gra*ri"e*ous adjective (Also<
  • Onagraceous
  • Onagrarieous
)
Etymology
From NL. Onagra an old scientific name of the evening primrose (Enothera), fr. Gr. a kind of plant; of uncertain origin.
Definitions
  1. (Bot.) Pertaining to, or resembling, a natural order of plants (Onagraceæ or Onagrarieæ), which includes the fuchsia, the willow-herb (Epilobium), and the evening primrose (OEnothera).

Webster 1913