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We found 20 dictionaries with English definitions that include the word piston ring: Click on the first link on a line below to go directly to a page where "piston ring" is defined. General (17 matching dictionaries) piston ring: American Heritage Dictionary of the English Language [home, info] piston ring: Collins English Dictionary [home, info] piston ring: Vocabulary.com [home, info] piston ring: Merriam-Webster's Online Dictionary, 11th Edition [home, info] piston ring: Wordnik [home, info] piston ring: Wiktionary [home, info] piston ring: The Wordsmyth English Dictionary-Thesaurus [home, info] piston ring: Infoplease Dictionary [home, info] Piston ring, piston ring: Dictionary.com [home, info] piston ring: UltraLingua English Dictionary [home, info] Piston ring: Wikipedia, the Free Encyclopedia [home, info] piston ring: Rhymezone [home, info] piston ring: Free Dictionary [home, info] piston ring: Mnemonic Dictionary [home, info] piston ring: WordNet 1.7 Vocabulary Helper [home, info] piston ring: LookWAYup Translating Dictionary/Thesaurus [home, info] piston ring: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) piston ring: Encyclopedia [home, info] Sports (1 matching dictionary) Piston ring: Internet Karting Glossary [home, info] Tech (1 matching dictionary) Piston ring: AUTOMOTIVE TERMS [home, info]

Quick definitions from WordNet (piston ring) ▸ noun:  seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall