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We found 30 dictionaries with English definitions that include the word heighten:
Click on the first link on a line below to go directly to a page where "heighten" is defined.

General (27 matching dictionaries)

1. heighten: Merriam-Webster.com [home, info]
2. heighten: Oxford Dictionaries [home, info]
3. heighten: American Heritage Dictionary of the English Language [home, info]
4. heighten: Collins English Dictionary [home, info]
5. heighten: Vocabulary.com [home, info]
6. heighten: Macmillan Dictionary [home, info]
7. Heighten, heighten: Wordnik [home, info]
8. heighten: Cambridge Advanced Learner's Dictionary [home, info]
9. heighten: Wiktionary [home, info]
10. heighten: Webster's New World College Dictionary, 4th Ed. [home, info]
11. heighten: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. heighten: Infoplease Dictionary [home, info]
13. Heighten, heighten: Dictionary.com [home, info]
14. heighten: UltraLingua English Dictionary [home, info]
15. heighten: Cambridge Dictionary of American English [home, info]
16. Heighten: Online Plain Text English Dictionary [home, info]
17. heighten: Webster's Revised Unabridged, 1913 Edition [home, info]
18. heighten: Rhymezone [home, info]
19. Heighten: AllWords.com Multi-Lingual Dictionary [home, info]
20. heighten: Webster's 1828 Dictionary [home, info]
21. heighten: Free Dictionary [home, info]
22. heighten: Mnemonic Dictionary [home, info]
23. heighten: WordNet 1.7 Vocabulary Helper [home, info]
24. heighten: LookWAYup Translating Dictionary/Thesaurus [home, info]
25. heighten: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

26. heighten: ArtLex Lexicon of Visual Art Terminology [home, info]

Business (1 matching dictionary)

27. heighten: Legal dictionary [home, info]

Computing (1 matching dictionary)

28. heighten: Encyclopedia [home, info]

(Note: See heightens for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (heighten) ▸ verb:  make more extreme; raise in quantity, degree, or intensity ("Heightened interest") ▸ verb:  become more extreme ("The tension heightened") ▸ verb:  increase the height of ("The athletes kept jumping over the steadily heightened bars") ▸ verb:  increase ("Heighten the tension") ▸ verb:  make (one's senses) more acute ▸ verb:  make more intense, stronger, or more marked ("Potsmokers claim it heightens their awareness") ▸ Also see heightens ▸ Words similar to heighten ▸ Usage examples for heighten ▸ Words that often appear near heighten ▸ Rhymes of heighten ▸ Invented words related to heighten