Holozoic nutrition is a method of nutrition that involves the ingestion of liquid or solid organic material, digestion, absorption and assimilation of it to utilize it.
Or
Holozoic nutrition is the nutrition method in which animals take the energy containing organic materials, called food, into the gut. After digestion, this food can be absorbed into the body. When this food is decomposed in oxidation reactions, it can release energy to supply for daily uses.