micronutrient

[ 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

British Dictionary definitions for micronutrient

micronutrient
/ (ˌmaɪkrəʊˈnjuːtrɪənt) /

noun

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

Medical definitions for micronutrient

micronutrient
[ mī′krō-nōōtrē-ənt ]

n.

A substance, such as a vitamin or mineral, that is essential in minute amounts for the proper growth and metabolism of a living organism.