macronutrient


mac·ro·nu·tri·ent

noun \-ˈnü-trē-ənt, -ˈnyü-\

Definition of MACRONUTRIENT

1
:  a chemical element (as nitrogen, phosphorus, or potassium) of which relatively large quantities are essential to the growth and health of a plant
2
:  a substance (as protein or carbohydrate) essential in large amounts to the growth and health of an animal — compare micronutrient 2

First Known Use of MACRONUTRIENT

1942

mac·ro·nu·tri·ent

noun \-ˈn(y)ü-trē-ənt\   (Medical Dictionary)

Medical Definition of MACRONUTRIENT

: a chemical element or substance (as protein, carbohydrate, or fat) required in relatively large quantities in nutrition

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