noun, plural ad·e·no·mas, ad·e·no·ma·ta [ad-n-oh-muh-tuh] /ˌæd nˈoʊ mə tə/. Pathology.

a benign tumor originating in a secretory gland.
a benign tumor of glandlike structure.

Origin of adenoma

From New Latin, dating back to 1865–70; see origin at aden-, -oma
Related formsad·e·nom·a·tous [ad-n-om-uh-tuh s, -oh-muh-] /ˌæd nˈɒm ə təs, -ˈoʊ mə-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of adenomatous

British Dictionary definitions for adenomatous


noun plural -mas or -mata (-mətə)

a tumour, usually benign, occurring in glandular tissue
a tumour having a glandlike structure
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

Medicine definitions for adenomatous


[ăd′n-ŏmə-təs, -ōmə-təs]


Of or relating to adenoma.
Of or relating to various types of glandular hyperplasia.



n. pl. ad•e•no•mas

A benign epithelial tumor having a glandular origin and structure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.