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We found 51 dictionaries with English definitions that include the word constant:
Click on the first link on a line below to go directly to a page where "constant" is defined.

General (30 matching dictionaries)

1. constant: Merriam-Webster.com [home, info]
2. constant: Oxford Dictionaries [home, info]
3. constant: American Heritage Dictionary of the English Language [home, info]
4. constant: Collins English Dictionary [home, info]
5. constant: Vocabulary.com [home, info]
6. constant, constant: Macmillan Dictionary [home, info]
7. Constant, constant: Wordnik [home, info]
8. constant: Cambridge Advanced Learner's Dictionary [home, info]
9. Constant: Wiktionary [home, info]
10. constant: Webster's New World College Dictionary, 4th Ed. [home, info]
11. constant: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. constant: Infoplease Dictionary [home, info]
13. constant: Dictionary.com [home, info]
14. constant: Online Etymology Dictionary [home, info]
15. constant: UltraLingua English Dictionary [home, info]
16. constant: Cambridge Dictionary of American English [home, info]
17. Constant (computer programming), Constant (computer science), Constant (disambiguation), Constant (given name), Constant (mathematics), Constant (programming), Constant (surname), Constant, The Constant (I Blame Coco album), The Constant (Story of the Year album), The Constant: Wikipedia, the Free Encyclopedia [home, info]
18. Constant: Online Plain Text English Dictionary [home, info]
19. constant: Webster's Revised Unabridged, 1913 Edition [home, info]
20. constant: Rhymezone [home, info]
21. constant, constant: AllWords.com Multi-Lingual Dictionary [home, info]
22. constant: Webster's 1828 Dictionary [home, info]
23. Constant: E Cobham Brewer, The Reader's Handbook [home, info]
24. constant: Free Dictionary [home, info]
25. constant: Mnemonic Dictionary [home, info]
26. constant: WordNet 1.7 Vocabulary Helper [home, info]
27. Constant, constant: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. constant: Dictionary/thesaurus [home, info]

Art (3 matching dictionaries)

29. constant: Dictionary of Philosophical Terms and Names [home, info]
30. CONSTANT: Shakespeare Glossary [home, info]
31. Constant: Glossary of Stamp Collecting Terms [home, info]

Business (3 matching dictionaries)

32. Constant: Construction Term Glossary [home, info]
33. constant: Legal dictionary [home, info]
34. constant: Financial dictionary [home, info]

Computing (1 matching dictionary)

35. constant: Encyclopedia [home, info]

Medicine (3 matching dictionaries)

36. Constant: MedFriendly Glossary [home, info]
37. constant: online medical dictionary [home, info]
38. constant: Medical dictionary [home, info]

Miscellaneous (4 matching dictionaries)

39. constant: Sociology [home, info]
40. Constant: baby names list [home, info]
41. CONSTANT: Acronym Finder [home, info]
42. constant: Idioms [home, info]

Science (6 matching dictionaries)

43. Constant: Eric Weisstein's World of Mathematics [home, info]
44. -constant (sigma constant): PHYSICAL ORGANIC CHEMISTRY [home, info]
45. constant: MATH SPOKEN HERE! [home, info]
46. constant: PlanetMath Encyclopedia [home, info]
47. Constant: Fundamental Statistics for the Behavioral Sciences [home, info]
48. constant: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Tech (1 matching dictionary)

49. Constant: AUTOMOTIVE TERMS [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (constant) ▸ noun:  a quantity that does not vary ▸ noun:  a number representing a quantity assumed to have a fixed value in a specified mathematical context ("The velocity of light is a constant") ▸ adjective:  steadfast in purpose or devotion or affection ("A man constant in adherence to his ideals") ▸ adjective:  continually recurring or continuing without interruption ("Constant repetition of the exercise") ▸ adjective:  persistent in occurrence and unvarying in nature ("Maintained a constant temperature") ▸ adjective:  uninterrupted in time and indefinitely long continuing ("In constant pain") ▸ name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #6501) ▸ Word origin ▸ Words similar to constant ▸ Usage examples for constant ▸ Popular adjectives describing constant ▸ Popular nouns described by constant ▸ Words that often appear near constant ▸ Rhymes of constant ▸ Invented words related to constant