WordReference Random House Unabridged Dictionary of American English © 2026
ul•ma•ceous
(ul mā′shəs),USA pronunciation adj.
- Plant Biologybelonging to the Ulmaceae, the elm family of plants. Cf. elm family.
- Neo-Latin Ulmace(ae) family name (Ulm(us) a genus (Latin: elm) + -aceae -aceae) + -ous
- 1840–50
'ulmaceous' also found in these entries (note: many are not synonyms or translations):