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hyperplasia

American

[hahy-per-pley-zhuh, -zhee-uh, -zee-uh] / ˌhaɪ pərˈpleɪ ʒə, -ʒi ə, -zi ə /

noun

Pathology, Biology.

abnormal multiplication of cells.
enlargement of a part due to an abnormal numerical increase of its cells.

hyperplasia British

/ ˌhaɪpəˈplæzɪə, ˌhaɪpəˈplæstɪk /

noun

enlargement of a bodily organ or part resulting from an increase in the total number of cells Compare 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

Other Word Forms

hyperplastic adjective

Etymology

Origin of hyperplasia

First recorded in 1860–65; hyper- + -plasia

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These vessels were encased by CGRP+ sensory nerve fibers and were growing towards the lining fibroblasts in areas of excessive tissue growth, or hyperplasia.

From Science Daily • Apr. 11, 2024

The word “benign” in benign prostatic hyperplasia means the prostate isn’t cancerous.

From Seattle Times • Jan. 26, 2024

The procedure, however, left her with a rare complication called paradoxical adipose hyperplasia, or overgrowth of fatty tissue.

From Salon • Sep. 21, 2023

“P.A.H. is likely being underreported and misdiagnosed,” a 2020 study on paradoxical adipose hyperplasia found.

From New York Times • Apr. 16, 2023

In some cases the hyperplasia affects chiefly the blood vessels of the thyreoid—vascular goitre.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023