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We found 63 dictionaries with English definitions that include the word active:
Click on the first link on a line below to go directly to a page where "active" is defined.

General (32 matching dictionaries)

1. active: Merriam-Webster.com [home, info]
2. active, the active: Oxford Learner's Dictionaries [home, info]
3. active: American Heritage Dictionary of the English Language [home, info]
4. active: Collins English Dictionary [home, info]
5. active: Vocabulary.com [home, info]
6. active, the active: Macmillan Dictionary [home, info]
7. Active, active: Wordnik [home, info]
8. active: Cambridge Advanced Learner's Dictionary [home, info]
9. active: Wiktionary [home, info]
10. active: Webster's New World College Dictionary, 4th Ed. [home, info]
11. active: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. active: Infoplease Dictionary [home, info]
13. ACTIVE: Dictionary.com [home, info]
14. active: Online Etymology Dictionary [home, info]
15. active: UltraLingua English Dictionary [home, info]
16. active: Cambridge Dictionary of American English [home, info]
17. Active (Casiopea album), Active (album), Active (ship), Active (sternwheeler), Active: Wikipedia, the Free Encyclopedia [home, info]
18. Active: Online Plain Text English Dictionary [home, info]
19. active: Webster's Revised Unabridged, 1913 Edition [home, info]
20. active: Rhymezone [home, info]
21. active: AllWords.com Multi-Lingual Dictionary [home, info]
22. active: Webster's 1828 Dictionary [home, info]
23. active: Free Dictionary [home, info]
24. active: Hutchinson Dictionaries [home, info]
25. active: Mnemonic Dictionary [home, info]
26. active: WordNet 1.7 Vocabulary Helper [home, info]
27. active: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. active: Dictionary/thesaurus [home, info]
29. active: Wikimedia Commons US English Pronunciations [home, info]
30. Active: Dictionary of Phrase and Fable (1898) [home, info]

Art (6 matching dictionaries)

31. Active: Health & Beauty Glossary [home, info]
32. Active: Glossary of English Grammar Terms [home, info]
33. ACTIVE: Technical Glossary of Theatre Terms [home, info]
34. active: The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) [home, info]
35. active: Literary Criticism [home, info]
36. Active: Lexicon of Linguistics [home, info]

Business (8 matching dictionaries)

37. Active: MoneyGlossary.com [home, info]
38. active: Glossary of Legal Terms [home, info]
39. Active: bizterms.net [home, info]
40. Active: Bloomberg Financial Glossary [home, info]
41. ACTIVE: Bouvier's Law Dictionary 1856 Edition [home, info]
42. active: Legal dictionary [home, info]
43. Active: Financial dictionary [home, info]
44. active: BusinessDictionary.com [home, info]

Computing (3 matching dictionaries)

45. active: Netlingo [home, info]
46. active: Webopedia [home, info]
47. active: Encyclopedia [home, info]

Medicine (3 matching dictionaries)

48. active: Natural Health glossary [home, info]
49. active: online medical dictionary [home, info]
50. active: Medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

51. ACTIVE: Acronym Finder [home, info]
52. ACTIVE: AbbreviationZ [home, info]
53. active: Idioms [home, info]

Slang (1 matching dictionary)

54. active, active [docking]: Urban Dictionary [home, info]

Tech (7 matching dictionaries)

55. active: Webster's New World Telecom Dictionary [home, info]
56. active: Construction deterioration & building durability glossary [home, info]
57. Active: Glossary of video terms [home, info]
58. Active: Beauty & Health Glossary [home, info]
59. Active: National Weather Service Glossary [home, info]
60. active: SOLAR-TERRESTRIAL TERMS [home, info]
61. Active: Sweetwater Music [home, info]

(Note: See actives for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (active) ▸ noun:  a person devoted to the active life ▸ noun:  the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb ("`The boy threw the ball' uses the active voice") ▸ noun:  chemical agent capable of activity ▸ adjective:  taking part in an activity ("An active member of the club") ▸ adjective:  being in physical motion ("Active fish in the aquarium") ▸ adjective:  engaged in or ready for military or naval operations ("On active duty") ▸ adjective:  characterized by energetic activity ("An active toddler") ▸ adjective:  engaged in full-time work ("Active duty") ▸ adjective:  full of activity or engaged in continuous activity ("An active seaport") ▸ adjective:  tending to become more severe or wider in scope ("Active tuberculosis") ▸ adjective:  disposed to take action or effectuate change ("A director who takes an active interest in corporate operations") ▸ adjective:  producing activity or change ▸ adjective:  (of e.g. volcanos) erupting or liable to erupt ("Active volcanos") ▸ adjective:  expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water') ▸ adjective:  expressing that the subject of the sentence has the semantic function of actor ("Hemingway favors active constructions") ▸ adjective:  exerting influence or producing an effect ("An active ingredient") ▸ adjective:  of the sun; characterized by a high level activity in sunspots and flares and radio emissions ▸ adjective:  characterized by energetic bodily activity ("Tennis is an active sport") ▸ adjective:  in operation ("An active tradition") ▸ Also see actives ▸ Word origin ▸ Words similar to active ▸ Usage examples for active ▸ Idioms related to active (New!) ▸ Popular adjectives describing active ▸ Popular nouns described by active ▸ Words that often appear near active ▸ Rhymes of active ▸ Invented words related to active