[ yoo-nuh-lat-er-uh l ]
/ ˌyu nəˈlæt ər əl /


Origin of unilateral

From the New Latin word ūnilaterālis, dating back to 1795–1805. See uni-, lateral


u·ni·lat·er·al·i·ty, nounu·ni·lat·er·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for unilateral

British Dictionary definitions for unilateral

/ (ˌjuːnɪˈlætərəl) /


of, having, affecting, or occurring on only one side
involving or performed by only one party of severalunilateral disarmament
law (of contracts, obligations, etc) made by, affecting, or binding one party only and not involving the other party in reciprocal obligations
botany having or designating parts situated or turned to one side of an axis
sociol relating to or tracing the line of descent through ancestors of one sex onlyCompare bilateral (def. 5)
phonetics denoting an (l) sound produced on one side of the tongue only

Derived forms of unilateral

unilateralism or unilaterality, noununilaterally, adverb
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

Medical definitions for unilateral

[ yōō′nə-lătər-əl ]


On, having, or confined to only one side.

Other words from unilateral

u′ni•later•al•ly adv.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.