[ pruh-lif-uh-rey-shuh n ]
/ prəˌlɪf əˈreɪ ʃən /


the growth or production of cells by multiplication of parts.
a rapid and often excessive spread or increase: nuclear proliferation.

Origin of proliferation

First recorded in 1855–60; proliferate + -ion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for proliferation

British Dictionary definitions for proliferation

/ (prəˌlɪfəˈreɪʃən) /


rapid growth or reproduction of new parts, cells, etc
rapid growth or increase in numbers
a great numberdone up in a proliferation of fancy frills
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

Medical definitions for proliferation

[ prə-lĭf′ə-rāshən ]


The growth and reproduction of similar cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.