Definitions for "Macronutrient"
A nutrient element absorbed by the plant in large amounts, often more than 0.1 % of its dry weight. The following are considered macroelements: carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur.
A nutrient plants need in large quantities; the macronutrients include carbon, nitrogen, oxygen, phosphorus, sulfur, and water.
A general terms for an esssential dietary component - protein, fats and carbohydrates, which is consumed in large amounts.