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International College of Surgeons.


a suffix of nouns that denote a body of facts, knowledge, principles, etc., usually corresponding to adjectives ending in -ic, or -ical: ethics; physics; politics; tactics .
Origin of -ics
plural of -ic, representing Latin -ica (< Greek -ika, neuter plural of -ikos), as in rhētórica (plural) rhetoric book
Usage note
Nouns ending in -ics that name fields of study, sciences, arts, professions, or the like are usually not preceded by an article and are used with a singular verb: Acoustics (the science) deals with sound. Politics (the art of government) fascinates me. In certain uses, often when preceded by a determiner like the, his, her, or their, most of these nouns can take a plural verb: The acoustics (the sound-reflecting qualities) of the hall are splendid. Their politics (political opinions) have antagonized everyone. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for ICS


Indian Civil Service


suffix (functioning as sing)
indicating a science, art, or matters relating to a particular subject: aeronautics, politics
indicating certain activities or practices: acrobatics
Word Origin
plural of -ic, representing Latin -ica, from Greek -ika, as in mathēmatika mathematics
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 ICS


in the names of sciences or disciplines (acoustics, aerobics, economics, etc.) it represents a 16c. revival of the classical custom of using the neuter plural of adjectives with -ikos (see -ic) to mean "matters relevant to" and also as the titles of treatises about them. Subject matters that acquired their names in English before c.1500, however, tend to remain in singular (e.g. arithmetic, logic).

Online Etymology Dictionary, © 2010 Douglas Harper
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ICS in Medicine

-ics suff.

  1. Science; art; study; knowledge; skill: pharmaceutics.

  2. Actions, activities, or practices of: macrobiotics.

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