Definify.com

Webster 1913 Edition

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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.

hyperplasia ‎(plural hyperplasias)

(medicine) An increase in the size of a tissue or organ due to increased number of cells.

increase in the size of a tissue or organ