Origin of oleaginousFrench oléagineux ; from Classical Latin oleaginus ; from olea, olive tree (; from Classical Greek elaia, olive, olive tree)
- Of or relating to oil.
- Falsely or smugly earnest; unctuous: oleaginous flattery.
Origin of oleaginousFrom Middle English oliaginose and from French oléagineux (from Old French), both from Latin ole&amacron;ginus, of the olive tree, from olea, olive tree, alteration (influenced by oleum, olive oil) of ol&imacron;va; see olive.
(comparative more oleaginous, superlative most oleaginous)