Hyperplasia

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Hyperplasia \Hy`per*pla"si*a\, n. [NL., fr. Gr. "ype`r over + ?
     conformation, fr. ? to mold.] (Med. & Biol.)
     An increase in, or excessive growth of, the normal elements
     of any part.
     [1913 Webster]
  


     Note: Hyperplasia relates to the formation of new elements,
           hypertrophy being an increase in bulk of preexisting
           normal elements. --Dunglison.
           [1913 Webster]

From WordNet (r) 2.0 [wn]:

  hyperplasia
       n : abnormal increase in number of cells