Webster's English Dictionary

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hypertrophy

1. hy.per.tro.phy \hi--'p*r-tr*-fe-\ n [prob. fr. NL hypertrophia, fr. 
   hyper- + -trophia -trophy] 1: excessive development of an organ or part; 
   specif : increase in  bulk (as by thickening of muscle fibers) without 
   multiplication of parts 2: exaggerated growth or complexity : ELABORATION 
2. hypertrophy vt : to affect with hypertrophy to undergo hypertrophy