Dictionary

self–sealing

adjective self–seal·ing \ˈself-ˈsē-liŋ\

Definition of SELF-SEALING

1
:  capable of being sealed by pressure without the addition of moisture <self–sealing envelopes>
2
:  capable of sealing itself (as after puncture) <a self–sealing tire>
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First Known Use of SELF-SEALING

1851

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