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We found 12 dictionaries with English definitions that include the word halley's comet: Click on the first link on a line below to go directly to a page where "halley's comet" is defined. General (9 matching dictionaries) Halley's comet: American Heritage Dictionary of the English Language [home, info] Halley's Comet, Halley's Comet: Collins English Dictionary [home, info] Halley's Comet: Wiktionary [home, info] Halley's Comet: The Wordsmyth English Dictionary-Thesaurus [home, info] Halley's comet: Infoplease Dictionary [home, info] Halley's comet: Dictionary.com [home, info] Halley's Comet: Wikipedia, the Free Encyclopedia [home, info] Halley's Comet: Encarta® Online Encyclopedia, North American Edition [home, info] Halley's comet: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) Halley's Comet: Encyclopedia [home, info] Science (1 matching dictionary) Halley's Comet: Extragalactic Astronomy [home, info] Slang (1 matching dictionary) Halley's Comet: Urban Dictionary [home, info]