[nee-uh-plaz-uh m]

noun Pathology.

a new, often uncontrolled growth of abnormal tissue; tumor.

Nearby words

  1. neophilia,
  2. neophobia,
  3. neophyte,
  4. neopilina,
  5. neoplasia,
  6. neoplasticism,
  7. neoplasty,
  8. neoplatonism,
  9. neopopulist,
  10. neoprene

Origin of neoplasm

1860–65; neo- + plasm

Related formsne·o·plas·tic [nee-uh-plas-tik] /ˌni əˈplæs tɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for neoplasm

  • A tumour or neoplasm is a localised swelling composed of newly formed tissue which fulfils no physiological function.

    Manual of Surgery|Alexis Thomson and Alexander Miles

British Dictionary definitions for neoplasm



pathol any abnormal new growth of tissue; tumour
Derived Formsneoplastic (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

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

Medicine definitions for neoplasm




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.
Related formsne′o•plastic (-plăstĭk) adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for neoplasm



An abnormal growth of tissue in animals or plants. Neoplasms can be benign or malignant. Also called tumor
Related formsneoplastic adjective (nē′ə-plăstĭk)

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.