Source : Webster's Revised Unabridged Dictionary (1913)

Malvaceous \Mal*va"ceous\, a. [L. malvaceus, from malva mallows.
   See {Mallow}.] (Bot.)
   Pertaining to, or resembling, a natural order of plants
   ({Malvace[ae]}), of which the mallow is the type. The cotton
   plant, hollyhock, and abutilon are of this order, and the
   baobab and the silk-cotton trees are now referred to it.

Source : WordNet®

Malvaceae
     n : herbs and shrubs and some trees: mallows; cotton; okra [syn:
          {family Malvaceae}, {mallow family}]