The Collaborative International Dictionary
Pomaceous
Pomaceous \Po*ma"ceous\, a. [LL. ponum an apple.]
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(Bot.)
Like an apple or pear; producing pomes.
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.
Like pomace.
Douglas Harper's Etymology Dictionary
pomaceous
1706, from Vulgar Latin *poma "apple," originally Latin pomus "fruit," later "apple" (see Pomona) + -aceous.
Wiktionary
pomaceous
a. 1 (context botany English) Of, pertaining to, or resembling a pome. 2 (context botany English) That bears apples or pomes.