hyperplasia

American  

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

noun

Pathology, Biology.

1. abnormal multiplication of cells.

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

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hyperplasia British  

/ ˌhaɪpəˈplæzɪə, ˌhaɪpəˈplæstɪk /

noun

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

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Other Word Forms

Derived Forms

• hyperplastic
  adjective

Etymology

Origin of hyperplasia

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

Example Sentences

Neurocrine already markets Crenessity, an oral CRF1 receptor antagonist used to treat congenital adrenal hyperplasia, which is a collection of genetic disorders affecting the adrenal glands.

From MarketWatch • Apr. 6, 2026

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

An enlarged prostate, known also as benign prostatic hyperplasia, or BPH, is a noncancerous condition that occurs frequently among older men.

From New York Times • Jan. 17, 2024

Morbid Anatomy.—Both the secreting and the fibrous elements share in the hyperplasia, and the gland as a whole becomes enlarged and forms a horseshoe-shaped swelling of moderate size in the neck.

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