Definitions for oleaceae
Oleaceae, family Oleaceae, olive family(noun)
trees and shrubs having berries or drupes or capsules as fruits; sometimes placed in the order Oleales: olive; ash; jasmine; privet; lilac
U.S. National Library of Medicine
A plant family of the order Scrophulariales subclass Asteridae, class Magnoliopsida. The leaves are usually opposite and the flowers usually have four sepals, four petals, two stamens, and two fused carpels that form a single superior ovary.