I.C.S.

-ics,

suffix.

1. a body of facts or principles; a system of thought; a science or field of study, as in optics, aesthetics, metaphysics, genetics.

2. a system or a method of action; art or practice, as in tactics, gymnastics, geodetics, ceramics.

╂[originally plural of -ic < Latin -ica < Greek -iká, neuter plural, matters having to do with]

I.C.S.,

1. British. Indian Civil Service.

2. U.S. International Correspondence School.