Acronyms dictionary TSA What does TSA mean? TSA is the acronym for the Transportation Security Administration, an American governmental agency that is responsible for travel safety, especially air travel. Related words: 4th Amendment mile high club let’s go Examples of TSA The TSA's inefficiency isn't just aggravating and unnecessary; by pushing people to drive instead of fly, it's actively dangerous and costing lives. Dylan Matthews, Vox.com, 2016 Looking up TSA regulations for carrying breast milk on airplanes. Needless to say, at least airport security doesn't want my kid to starve đź‘Ť #tsa @KyliBaldwin, June, 2018 In reality, attempting to trick the TSA won’t get you anywhere. Jess Bolluyt, CheatSheet.com, March, 2018 SEE MORE EXAMPLES Who uses TSA? Memebase Just Added trigger law, bystander effect, CSI effect, Streisand effect, L + ratio Note This is not meant to be a formal definition of TSA like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of TSA that will help our users expand their word mastery.