You searched for: “hypertrophy
hypertrophy
1. Usually an abnormal enlargement of an organ or body part because of an increase in cell size rather than cell numbers.
2. General increase in bulk of a part or organ, not due to tumor formation.

Use of the term may be restricted to denote greater bulk through increase in size, but not in number, of the individual tissue element; such as, the enlargement of muscles as a result of exercise.