Try Our Apps


Avoid these words. Seriously.


[nee-uh-plaz-uh m] /ˈni əˌplæz əm/
noun, Pathology.
a new, often uncontrolled growth of abnormal tissue; tumor.
Origin of neoplasm
1860-65; neo- + plasm
Related forms
[nee-uh-plas-tik] /ˌni əˈplæs tɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for neoplasm
Historical Examples
British Dictionary definitions for neoplasm


(pathol) any abnormal new growth of tissue; tumour
Derived Forms
neoplastic (ˌniːəʊˈplæstɪk) 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
Cite This Source
Word Origin and History for neoplasm

1864, coined in German by Karl Friedrich Burdach (1776-1847) from neo- + Greek plasma "formation" (see -plasm). Related: Neoplastic.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
neoplasm in Medicine

neoplasm ne·o·plasm (nē'ə-plāz'əm)
An abnormal new growth of tissue that grows by cellular proliferation more rapidly than normal, continues to grow after the stimuli that initiated the new growth cease, shows partial or complete lack of structural organization and functional coordination with the normal tissue, and usually forms a distinct mass of tissue which may be either benign or malignant.

ne'o·plas'tic (-plās'tĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
neoplasm in Science
An abnormal growth of tissue in animals or plants. Neoplasms can be benign or malignant. Also called tumor.

neoplastic adjective (nē'ə-plās'tĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for neoplasm

Difficulty index for neoplasm

Some English speakers likely know this word

Word Value for neoplasm

Scrabble Words With Friends