phr. & comp. abb. an expression of gratitude given in advance of the hoped-for receipt of an answer to a question. : I hope you can help me. TIA. Bob.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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thanks in advancejargon (Usually "TIA") A conventional Usenet net.politeness ending a posted request for information or assistance. Sometimes written "advTHANKSance" or "aTdHvAaNnKcSe". [The Jargon File] (1999-02-09)
