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 (Pomeæ) 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.