a suffix occurring in nouns that denote actions, conditions, or states (hypnosis; leukocytosis; osmosis), especially disorders or abnormal states (chlorosis; neurofibromatosis; tuberculosis).
- Compare -otic.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use -osis in a sentence
The surgeons had called it something ending in osis and prescribed finally "light duty."Command | William McFee
British Dictionary definitions for -osis
indicating a process or state: metamorphosis
indicating a diseased condition: tuberculosis Compare -iasis
indicating the formation or development of something: fibrosis
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
Scientific definitions for -osis
A suffix that means:
Diseased condition, as in tuberculosis.
Condition or process, as in osmosis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.