air-tight

CIDE DICTIONARY

air-tight, a.

So tight as to be impermeable to air or other gases; as, an air-tight cylinder; -- said of containers. [1913 Webster]
of such close construction as to have little leakage of air in or out; -- said of structures [WordNet 1.5]
so thoroughly convincing as to be insusceptible to doubt; having no apparent counterarguments; -- of arguments or assertions [PJC]

air-tight, n.

A stove the draft of which can be almost entirely shut off. [1913 Webster]

For further exploring for "air-tight" in Webster Dictionary Online

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