abbreviation for "id est," Latin for "that is"; also means, "in other words." it is followed by an explanation, specific list or a paraphrase.

compare with e.g.

also reference: www.getitwriteonline.com/archive/061801.htm, another comparison of i.e. and e.g.
i like music (i.e., the ordering of tones or sounds to produce rhythm, melody and/or harmony.)
by ambercat May 08, 2005
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Abbreviation used to clarify something, to narrow something, or to specificate. This form is used ONLY in writing, this is too strange in speaking.
I would dig in some pizzas, i.e. the italian one.
by egava August 20, 2015
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Pronounced ‘Aiy’ ‘Ess
Short for Infatuated Spaz. A person who is so besotted by someone that they don’t mind being verbally or physically abused by them.
“Hey man you really shit on your girl don’t you?”
“Don’t worry about her she’s my I.S.
by Prime Dean July 29, 2018
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High School computer geeks usually go on to lucrative careers in I.S. departments.
by Tom Cumbow January 23, 2004
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