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We found 38 dictionaries with English definitions that include the word periodic: Click on the first link on a line below to go directly to a page where "periodic" is defined. General (28 matching dictionaries) periodic: American Heritage Dictionary of the English Language [home, info] periodic: Collins English Dictionary [home, info] periodic: Vocabulary.com [home, info] periodic: Macmillan Dictionary [home, info] periodic: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Periodic, periodic: Wordnik [home, info] periodic: Cambridge Advanced Learner's Dictionary [home, info] Periodic: Wiktionary [home, info] periodic: Webster's New World College Dictionary, 4th Ed. [home, info] periodic: The Wordsmyth English Dictionary-Thesaurus [home, info] periodic: Infoplease Dictionary [home, info] periodic: Dictionary.com [home, info] periodic: Online Etymology Dictionary [home, info] periodic: UltraLingua English Dictionary [home, info] periodic: Cambridge Dictionary of American English [home, info] Periodic: Wikipedia, the Free Encyclopedia [home, info] Periodic: Online Plain Text English Dictionary [home, info] periodic: Webster's Revised Unabridged, 1913 Edition [home, info] periodic: Rhymezone [home, info] periodic: AllWords.com Multi-Lingual Dictionary [home, info] periodic: Webster's 1828 Dictionary [home, info] periodic: Free Dictionary [home, info] periodic: Mnemonic Dictionary [home, info] periodic: WordNet 1.7 Vocabulary Helper [home, info] periodic: LookWAYup Translating Dictionary/Thesaurus [home, info] periodic: Dictionary/thesaurus [home, info] Art (1 matching dictionary) Periodic: Lexicon of Linguistics [home, info] Business (2 matching dictionaries) Periodic: Construction Term Glossary [home, info] periodic: Legal dictionary [home, info] Computing (1 matching dictionary) periodic: Encyclopedia [home, info] Medicine (2 matching dictionaries) periodic: online medical dictionary [home, info] periodic: Medical dictionary [home, info] Miscellaneous (1 matching dictionary) PERIODIC: Navajo Code Talkers' Dictionary [home, info] Science (2 matching dictionaries) Periodic: The Computational Beauty of Nature [home, info] periodic, periodic: PlanetMath Encyclopedia [home, info] Tech (1 matching dictionary) Periodic: Dictionary for Avionics [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (periodic) ▸ adjective:  happening or recurring at regular intervals ▸ adjective:  recurring at regular intervals ▸ adjective:  recurring or reappearing from time to time ("Periodic feelings of anxiety") ▸ Word origin