Real Dictionary

atrophy
verb: If a muscle or other part of the body atrophies, it decreases in size or strength, often as a result of an illness.

atrophy in American English
a wasting away, esp. of body tissue, an organ, etc., or the failure of an organ or part to grow or develop, as because of insufficient nutrition
to affect with or undergo atrophy
to cause atrophy in
to waste away or fail to develop
noun: a wasting away of the body or of an organ or part, as from defective nutrition or nerve damage

atrophy in British English
noun: a wasting away of an organ or part, or a failure to grow to normal size as the result of disease, faulty nutrition, etc
verb: to waste away or cause to waste away