a combining form meaning “all,” used in the formation of compound words: omnifarious; omnipotence; omniscient.

Origin of omni-

< Latin, combining form of omnis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for omni

Contemporary Examples of omni

  • On Friday, O'Donnell arrived at the Omni Shoreham like a conquering hero.

    The Daily Beast logo
    Watch Your Back, Sarah

    Margaret Carlson

    September 17, 2010

  • Which leads us to the encounter with Ziegler in the lobby of the Omni Shoreham.

    The Daily Beast logo
    GOP Shock Jock Goes Wild

    Max Blumenthal

    February 28, 2009

Historical Examples of omni

British Dictionary definitions for omni


combining form

all or everywhereomnipresent

Word Origin for omni-

from Latin omnis all
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

Word Origin and History for omni


word-forming element meaning "all," from Latin omni-, combining form of omnis "all, every, the whole, of every kind," of unknown origin, perhaps literally "abundant," from *op-ni-, from PIE root *op- "to work, produce in abundance" (see opus).

Online Etymology Dictionary, © 2010 Douglas Harper