[hahy-per-pley-zhuh, -zhee-uh, -zee-uh]
- abnormal multiplication of cells.
- enlargement of a part due to an abnormal numerical increase of its cells.
Origin of hyperplasia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hyperplasia
This change consists in hyperplasia of the gland-constituents.
These may be due in part to hyperplasia and in part to blood-engorgement.
The mesenteric glands show signs of irritation or of absorption of specific products in hypermic pigmentation and hyperplasia.
These organs are changed by a hyperplasia of the connective tissue, and especially by fatty degeneration of the epithelium.
At the same time that hyperplasia of the connective tissue is taking place the fat is accumulating in the hepatic cells.
- enlargement of a bodily organ or part resulting from an increase in the total number of cellsCompare hypertrophy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for hyperplasia
Online Etymology Dictionary, © 2010 Douglas Harper
- An abnormal increase in cells in a tissue or organ, excluding tumor formation, whereby the bulk of the tissue or organ is increased.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.