\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.