Word Study
oleaceous
CIDE DICTIONARY
oleaceous, a. [L. oléaceus of the olive tree.].
Of, pertaining to, or resembling, a natural family of plants (Oleaceæ ), mostly trees and shrubs, of which the olive is the type. It includes also the ash, the lilac, the true jasmine, and fringe tree. [1913 Webster]
OXFORD DICTIONARY
oleaceous, adj. of the plant family Oleaceae, including olive and jasmine.
Etymology
mod.L Oleaceae f. L olea olive-tree
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