[ mahy-kroh-noo-tree-uh nt, -nyoo- ]
/ ˌmaɪ kroʊˈnu tri ənt, -ˈnyu- /

noun Biochemistry.

an essential nutrient, as a trace mineral or vitamin, that is required by an organism in minute amounts.

Origin of micronutrient

First recorded in 1935–40; micro- + nutrient
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for micronutrient

/ (ˌmaɪkrəʊˈnjuːtrɪənt) /


any substance, such as a vitamin or trace element, essential for healthy growth and development but required only in minute amounts
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 micronutrient

[ mī′krō-nōōtrē-ənt ]


A substance, such as a vitamin or mineral, that is essential in minute amounts for the proper growth and metabolism of a living organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.