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tumour

 [too-mer, tyoo-]   Origin

tu·mor

   [too-mer, tyoo-]
noun
1.
a swollen part; swelling; protuberance.
2.
an uncontrolled, abnormal, circumscribed growth of cells in any animal or plant tissue; neoplasm.
3.
Archaic.
a.
inflated pride; haughtiness.
b.
pompous language; bombast.
Also, especially British, tu·mour.

Origin:
1535–45; < Latin: a swelling, swollen state, equivalent to tum(ēre) to swell + -or -or1

Related forms
tu·mor·like, adjective
tu·mor·ous, tu·mor·al, adjective
an·ti·tu·mor, adjective, noun
an·ti·tu·mor·al, adjective
non·tu·mor·ous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Tumour is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
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Collins
World English Dictionary
tumour or tumor (ˈtjuːmə)
 
—n
1.  pathol
 a.  any abnormal swelling
 b.  a mass of tissue formed by a new growth of cells, normally independent of the surrounding structures
2.  obsolete pompous style or language
 
[C16: from Latin, from tumēre to swell]
 
tumor or tumor
 
—n
 
[C16: from Latin, from tumēre to swell]
 
'tumorous or tumor
 
—adj
 
'tumoral or tumor
 
—adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

tumor
1540s, from L. tumor "swelling, condition of being swollen," from tumere "to swell" (see thigh).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

tumor tu·mor (t&oomacr;'mər, ty&oomacr;'-)
n.

  1. An abnormal growth of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function; a neoplasm.

  2. A swollen part; a swelling.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
tumor   (t'mər)  Pronunciation Key 
See neoplasm. See Note at cancer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

tumor definition


An abnormal mass of new tissue growth that serves no function in the body. Tumors are usually classified as benign or malignant and are often caused by cancer.

The American Heritage® 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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