English dictionary air-tight meaning and definition Definition and meaning of air-tight at MeaningMonkey.org. air-tight meaning and definition in the English Dictionary. AIR-TIGHT adjectiveDefinition of air-tight (adjective)having no weak points"an airtight defense"; "an airtight argument"synonyms: airtightnot allowing air or gas to pass in or outsynonyms: airtight, gas-tight Source: Princeton University Wordnet
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