Source : Webster's Revised Unabridged Dictionary (1913)

Pomaceous \Po*ma"ceous\, a. [LL. ponum an apple.]
   1. (Bot.)
      (a) Like an apple or pear; producing pomes.
      (b) Of or pertaining to a suborder ({Pome[ae]}) of
          rosaceous plants, which includes the true thorn trees,
          the quinces, service berries, medlars, and loquats, as
          well as the apples, pears, crabs, etc.

   2. Like pomace.