noun Pathology.

inflammation of a tonsil or the tonsils.

Origin of tonsillitis

1795–1805; < Latin tōnsill(ae) tonsils + -itis
Related formston·sil·lit·ic [ton-suh-lit-ik] /ˌtɒn səˈlɪt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tonsillitis

Historical Examples of tonsillitis

British Dictionary definitions for tonsillitis



inflammation of the palatine tonsils, causing enlargement, occasionally to the extent that they nearly touch one another
Derived Formstonsillitic (ˌtɒnsɪˈlɪtɪk), adjective
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 tonsillitis

also tonsilitis, 1801, from tonsil + -itis.

Online Etymology Dictionary, © 2010 Douglas Harper

tonsillitis in Medicine




Inflammation of a tonsil, especially the palatine tonsil.
Related formston′sil•litic (-lĭtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

tonsillitis in Science



Inflammation of the tonsils, usually caused by bacterial infection.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tonsillitis in Culture



An inflammation of the tonsils, sometimes the result of a bacterial infection.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.