Dictionary.com
definitions
  • synonyms

O-ring

[oh-ring]
See more synonyms for O-ring on Thesaurus.com
noun
  1. a ring of pliable material, as rubber or neoprene, used as a gasket: the failure of an O-ring caused the explosion that destroyed the space shuttle Challenger in 1986.
Show More

Origin of O-ring

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for o-ring

O-ring

noun
  1. a rubber ring used in machinery as a seal against oil, air, etc
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012