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[ton-suh-lahy-tis] /ˌtɒn səˈlaɪ tɪs/
noun, Pathology.
inflammation of a tonsil or the tonsils.
Origin of tonsillitis
1795-1805; < Latin tōnsill(ae) tonsils + -itis
Related forms
[ton-suh-lit-ik] /ˌtɒn səˈlɪt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for tonsillitis


inflammation of the palatine tonsils, causing enlargement, occasionally to the extent that they nearly touch one another
Derived Forms
tonsillitic (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
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Word Origin and History for tonsillitis

also tonsilitis, 1801, from tonsil + -itis.

Online Etymology Dictionary, © 2010 Douglas Harper
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tonsillitis in Medicine

tonsillitis ton·sil·li·tis (tŏn'sə-lī'tĭs)
Inflammation of a tonsil, especially the palatine tonsil.

ton'sil·lit'ic (-lĭt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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tonsillitis in Science
Inflammation of the tonsils, usually caused by bacterial infection.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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tonsillitis in Culture
tonsillitis [(ton-suh-leye-tis)]

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 Company.
Published by Houghton Mifflin Company. All rights reserved.
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