Definify.com
Webster 1913 Edition
Hyperplasia
‖
Hyˊper-pla′si-a
,Noun.
[NL., fr. Gr.
ὑπέρ
over + [GREEK] conformation, fr. [GREEK] to mold.] (Med. & Biol.)
An increase in, or excessive growth of, the normal elements of any part.
☞ Hyperplasia relates to the formation of new elements, hypertrophy being an increase in bulk of preexisting normal elements.
Dunglison.