1. A function of living plants and animals, consisting in the taking in and metabolism of food material whereby tissue is built up and energy liberated.trophism (2); 2. The study of the food and liquid requirements of human beings or animals for normal physiologic function, including energy, need, maintenance, growth, activity, reproduction, and lactation. [L. nutritio, fr. nutrio, to nourish]
total parenteral n. (TPN) n. maintained entirely by intravenous injection or other nongastrointestinal route.
Browse Medical References: