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

General (32 matching dictionaries)

1. sinus: Merriam-Webster.com [home, info]
2. sinus: Oxford Dictionaries [home, info]
3. sinus: American Heritage Dictionary of the English Language [home, info]
4. sinus: Collins English Dictionary [home, info]
5. sinus: Vocabulary.com [home, info]
6. sinus: Macmillan Dictionary [home, info]
7. Sinus, sinus: Wordnik [home, info]
8. sinus: Cambridge Advanced Learner's Dictionary [home, info]
9. sinus: Wiktionary [home, info]
10. sinus: Webster's New World College Dictionary, 4th Ed. [home, info]
11. sinus: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. sinus: Infoplease Dictionary [home, info]
13. sinus: Dictionary.com [home, info]
14. sinus: Online Etymology Dictionary [home, info]
15. sinus: UltraLingua English Dictionary [home, info]
16. sinus: Cambridge Dictionary of American English [home, info]
17. Sinus (anatomy), Sinus (botany), Sinus (disambiguation), Sinus (trigonometry), Sinus: Wikipedia, the Free Encyclopedia [home, info]
18. Sinus: Online Plain Text English Dictionary [home, info]
19. sinus: Webster's Revised Unabridged, 1913 Edition [home, info]
20. sinus: Rhymezone [home, info]
21. Sinus: AllWords.com Multi-Lingual Dictionary [home, info]
22. sinus: Webster's 1828 Dictionary [home, info]
23. sinus: Hutchinson's Dictionary of Difficult Words [home, info]
24. sinus: Free Dictionary [home, info]
25. sinus: Hutchinson Dictionaries [home, info]
26. sinus: Luciferous Logolepsy [home, info]
27. sinus: Mnemonic Dictionary [home, info]
28. sinus: WordNet 1.7 Vocabulary Helper [home, info]
29. sinus: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. sinus: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

31. Sinus (disambiguation), sinus: Encyclopedia [home, info]

Medicine (9 matching dictionaries)

32. Sinus: MedTerms.com Medical Dictionary [home, info]
33. sinus: online medical dictionary [home, info]
34. SINUS: Probert Encyclopaedia of Medicine [home, info]
35. Sinus: Allergy Glossary [home, info]
36. Sinus: DICTIONARY OF TERMS IN ORAL PHYSIOLOGY [home, info]
37. sinus: Dictionary of Cancer Terms [home, info]
38. Sinus (anatomy), Sinus (disambiguation), sinus, sinus-: Medical dictionary [home, info]
39. Sinus: Drug Medical Dictionary [home, info]
40. sinus: Hyperdictionary [home, info]

Miscellaneous (1 matching dictionary)

41. SINUS: Acronym Finder [home, info]

Science (6 matching dictionaries)

42. sinus: Glossary of Common Tree Terms [home, info]
43. sinus: Botanical Terms [home, info]
44. sinus: Bryological [home, info]
45. sinus: Nine Planets Glossary [home, info]
46. sinus: Flora of New South Wales [home, info]
47. SINUS: Zoom Astronomy Glossary [home, info]

Tech (1 matching dictionary)

48. Sinus: Dairy Glossary [home, info]

(Note: See sinuses for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (sinus) ▸ noun:  any of various air-filled cavities especially in the bones of the skull ▸ noun:  a wide channel containing blood; does not have the coating of an ordinary blood vessel ▸ noun:  an abnormal passage leading from a suppurating cavity to the body surface ▸ Also see sinuses ▸ Word origin ▸ Words similar to sinus ▸ Usage examples for sinus ▸ Popular adjectives describing sinus ▸ Words that often appear near sinus ▸ Rhymes of sinus ▸ Invented words related to sinus