Source : Webster's Revised Unabridged Dictionary (1913)

Acromegaly \Ac`ro*meg"a*ly\, n. [NL. acromegalia, fr. Gr.
   'a`kron point, peak + ?, ?, big.] (Med.)
   Chronic enlargement of the extremities and face.

Source : WordNet®

acromegaly
     n : enlargement of bones of hands and feet and face; often
         accompanied by headache and muscle pain and emotional
         disturbances; caused by overproduction of growth hormone
         by the anterior pituitary gland (due to a tumor) [syn: {acromegalia}]