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or -id

a suffix used in the names of chemical compounds:
Origin of -ide
extracted from oxide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for -ide


(added to the combining form of the nonmetallic or electronegative elements) indicating a binary compound: sodium chloride
indicating an organic compound derived from another: acetanilide
indicating one of a class of compounds or elements: peptide, lanthanide
Word Origin
from German -id, from French oxideoxide, based on the suffix of acideacid
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
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Word Origin and History for -ide

suffix used to form names of simple compounds of an element with another element or radical; originally abstracted from oxide, the first so classified.

Online Etymology Dictionary, © 2010 Douglas Harper
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-ide in Medicine

-ide suff.

  1. Group of related chemical compounds: monosaccharide.

  2. Binary compound: sodium chloride.

  3. Chemical element with properties similar to another: lanthanide.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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-ide in Science
A suffix used to form the names of various chemical compounds, especially the second part of the name of a compound that has two members (such as sodium chloride) or the name of a general type of compound (such as polysaccharide).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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