[ oh-lee-oh ]
/ ˈoʊ liˌoʊ /


Origin of oleo

First recorded in 1880–85; by shortening of oleomargarine

Can be confused

oleo olio

Definition for oleo (2 of 2)


a combining form meaning “oil,” used in the formation of compound words: oleograph.

Also especially before a vowel, ole-.

Origin of oleo-

< Latin, combining form representing oleum oil
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for oleo

British Dictionary definitions for oleo


combining form


Word Origin for oleo-

from Latin oleum oil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for oleo



Oil:oleic acid.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.