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IRS

British  

abbreviation

  1. Internal Revenue Service

  2. insulin resistance syndrome: a condition associated with diabetes mellitus in which higher than normal levels of insulin are present in the blood to compensate for the failure of normal insulin levels to perform their function

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The idea being: This isn’t actually a real lawsuit, and in cases where the same kind of claims have been made, the IRS has defended those cases and asserted all sorts of defenses.

From Slate • Jun. 9, 2026

The IRS data book lands while the biggest news on IRS audits these days is about the ones that may not be happening.

From MarketWatch • Jun. 5, 2026

IRS CEO Frank Bisagnano has said collections are a priority.

From MarketWatch • Jun. 5, 2026

IRS agents asked individual taxpayers to pay $11.3 billion in extra income tax as a result of audits.

From MarketWatch • Jun. 5, 2026

Milton wore them whenever he met with bank loan officers or auditors from the IRS.

From "Middlesex: A Novel" by Jeffrey Eugenides

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