“sic” is a Latin word that means “thus” or “in this way”.
It’s inserted in quotations to indicate that whoever is doing the quoting knows that there is a spelling or grammatical error in the quotation, and the text came “in this way”.
It means “duh, I know this is misspelled or grammatically incorrect, but I’m doing the honorable thing here and quoting the author verbatim rather than correcting the error.”
Or, less charitably, it means “The person I’m quoting is an idiot. I’m going to leave in all of his spelling, grammar, and usage errors to prove what an idiot he is.”
The Ame. Her. Dic. says “sic adv. Thus; so. Used in written texts to indicate that a surprising or paradoxical word, phrase, or fact is not a mistake and is to be read as it stands.”
Using it to point out spelling errors is probably a new thing that has developed along with usenet.
Or more likely for text media, “Don’t complain to the author/editor about this spelling/grammar error, complain to the source being quoted if you must.”
ab·bre·vi·a·tion (-brv-shn)
n. Abbr. abbr., abbrev.
1.The act or product of shortening.
2.A shortened form of a word or phrase used chiefly in writing to represent the complete form […]
I think that “sic” qualifies as an abbreviation in the sense that it the product of shortening. Of course, by that definition, brownies also qualify as an abbreviation.
What I can’t figure out, is that sometimes I’ll see “sic” and it doesn’t look like there’s anything wrong with the quote. Is my spelling/grammar that bad?