a noun suffix occurring in loanwords from Greek: psoriasis.
English Affixes From A To Z: A One-Stop List Of Suffixes, Prefixes, and Combining FormsIn English, we love to make new words by adding all sorts of bits to the front and back of existing terms. These are called affixes, and they are added to the base or stem of a word. When attached to the end of word, the affix is called a suffix. And to the beginning? A prefix.
Origin of -iasis
< Greek, equivalent to -iā- v. formative + -sis -sis
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British Dictionary definitions for -iasis
n combining form
(in medicine) indicating a diseased conditionpsoriasis Compare -osis (def. 2)
Word Origin for -iasis
from New Latin, from Greek, suffix of action
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
Medicine definitions for -iasis
A pathological condition characterized or produced by:teniasis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.