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We found 50 dictionaries with English definitions that include the word planet:
Click on the first link on a line below to go directly to a page where "planet" is defined.

General (35 matching dictionaries)

1. planet: Merriam-Webster.com [home, info]
2. planet, the planet: Oxford Learner's Dictionaries [home, info]
3. planet: American Heritage Dictionary of the English Language [home, info]
4. planet: Collins English Dictionary [home, info]
5. planet: Vocabulary.com [home, info]
6. planet: Macmillan Dictionary [home, info]
7. Planet, planet: Wordnik [home, info]
8. planet: Cambridge Advanced Learner's Dictionary [home, info]
9. planet: Wiktionary [home, info]
10. planet: Webster's New World College Dictionary, 4th Ed. [home, info]
11. planet: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. planet: Infoplease Dictionary [home, info]
13. planet: Dictionary.com [home, info]
14. planet: Cambridge International Dictionary of Idioms [home, info]
15. PLANET, Planet (Tech N9ne album), Planet (disambiguation), Planet (locomotive), Planet (research ship), Planet (software), Planet, The Planet (album), The Planet (film): Wikipedia, the Free Encyclopedia [home, info]
16. Planet: Online Plain Text English Dictionary [home, info]
17. planet: Webster's Revised Unabridged, 1913 Edition [home, info]
18. planet: Rhymezone [home, info]
19. Planet (m), planet: AllWords.com Multi-Lingual Dictionary [home, info]
20. planet: Webster's 1828 Dictionary [home, info]
21. PLANET, planet: Stammtisch Beau Fleuve Acronyms [home, info]
22. Planet: Encarta® Online Encyclopedia, North American Edition [home, info]
23. Planet: 1911 edition of the Encyclopedia Britannica [home, info]
24. planet: Free Dictionary [home, info]
25. planet: Mnemonic Dictionary [home, info]
26. planet: WordNet 1.7 Vocabulary Helper [home, info]
27. planet: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. planet: Dictionary/thesaurus [home, info]
29. Planet: World Wide Words [home, info]
30. planet: Wikimedia Commons US English Pronunciations [home, info]
31. planet: Online Etymology Dictionary [home, info]
32. planet: UltraLingua English Dictionary [home, info]
33. planet: Cambridge Dictionary of American English [home, info]

Art (2 matching dictionaries)

34. planet: The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) [home, info]
35. Planet: Glossary of Stamp Collecting Terms [home, info]

Computing (2 matching dictionaries)

36. Planet: Free On-line Dictionary of Computing [home, info]
37. planet: Encyclopedia [home, info]

Medicine (1 matching dictionary)

38. Planet, planet: online medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

39. Planet: Brilliant Dream Dictionary [home, info]
40. PLANET: Acronym Finder [home, info]
41. planet: Idioms [home, info]

Science (4 matching dictionaries)

42. Planet: Eric Weisstein's World of Astronomy [home, info]
43. Planet: Extragalactic Astronomy [home, info]
44. planet: Nine Planets Glossary [home, info]
45. PLANET: Zoom Astronomy Glossary [home, info]

Slang (1 matching dictionary)

46. Planet: Urban Dictionary [home, info]

Tech (2 matching dictionaries)

47. Planet: AUTOMOTIVE TERMS [home, info]
48. Planet: Explosives [home, info]

(Note: See planets for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (planet) ▸ noun:  any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system ▸ noun:  a person who follows or serves another ▸ Also see planets ▸ Word origin ▸ Words similar to planet ▸ Usage examples for planet ▸ Idioms related to planet (New!) ▸ Popular adjectives describing planet ▸ Words that often appear near planet ▸ Rhymes of planet ▸ Invented words related to planet