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lighttight

[lahyt-tahyt] /ˈlaɪtˌtaɪt/
adjective, Chiefly British
Origin
1880-1885
1880-85; light1 + tight, on the model of watertight, airtight, etc.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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9
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