O-ring

noun
\ˈō-ˌriŋ \

Definition of O-ring 

: a ring (as of synthetic rubber) used as a gasket

First Known Use of O-ring

1946, in the meaning defined above

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Dictionary Entries near O-ring

Orillia

orillon

orinasal

O-ring

Orinoco

Orinoco crocodile

oriole

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Time Traveler for O-ring

The first known use of O-ring was in 1946

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