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sinuses

 - 6 dictionary results
Sinuses
Get Relief From Sinus & Nasal Stuffiness Learn More.
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Mucinex® D
Clears nasal congestion and sinus pressure for 12 hours
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Sinus Problems
Specializing in Minimally Invasive Sinus Surgery (818)349-0600
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si⋅nus

  [sahy-nuhs]
Use sinuses in a Sentence
–noun, plural -nus⋅es.
1. a curve; bend.
2. a curving part or recess.
3. Anatomy.
a. any of various cavities, recesses, or passages, as a hollow in a bone, or a reservoir or channel for venous blood.
b. one of the hollow cavities in the skull connecting with the nasal cavities.
c. an expanded area in a canal or tube.
4. Pathology. a narrow passage leading to an abscess or the like.
5. Botany. a small, rounded depression between two projecting lobes, as of a leaf.
Origin:
1590–1600; < L sinus (s. sinu-) bent or curved surface, curve, fold

Related forms:
si⋅nus⋅like, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To sinuses
Sinuses
Get Relief From Sinus & Nasal Stuffiness Learn More.
www.Vicks.com
Mucinex® D
Clears nasal congestion and sinus pressure for 12 hours
www.mucinex.com
si·nus   (sī'nəs)   
n.  

  1. A depression or cavity formed by a bending or curving.

  2. Anatomy

    1. A dilated channel or receptacle containing chiefly venous blood.

    2. Any of various air-filled cavities in the bones of the skull, especially one communicating with the nostrils.

  3. Pathology A fistula leading from a pus-filled cavity.

  4. Botany A recess or indentation between lobes of a leaf or corolla.


[Middle English, hollow in the body, from Medieval Latin, from Latin, curve, hollow.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

sinus 
1597, "abscess, sore," from M.L. sinus, from L. sinus "bend, fold, curve." Meaning "hollow curve or cavity in the body" is attested from 1672. Sinusitis "inflammation of a sinus" is recorded from 1896.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: si·nus
Pronunciation: 'sI-n&s
Function: noun
: a cavity or hollow in the body: as a : a narrow elongated tractextending from a focus of suppuration and serving for the discharge of pus sinus> b (1) : a cavity in the substance of a bone of the skull that usuallycommunicates with the nostrils and contains air (2) : a channel for venous blood (3) : a dilatation in a bodily canal or vessel
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

sinus si·nus (sī'nəs)
n.

  1. A depression or cavity formed by a bending or curving.

  2. A channel for the passage of blood or lymph, without the coats of an ordinary vessel, such as the blood passages in the gravid uterus or in the cerebral meninges.

  3. Any of various air-filled cavities in the bones of the skull, especially one communicating with the nostrils.

  4. A dilatation in a blood vessel.

  5. A fistula or tract leading to a pus-filled cavity.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
sinus   (sī'nəs)  Pronunciation Key 


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  1. A cavity or hollow space in a bone of the skull, especially one that connects with the nose.

  2. A channel for the passage of a body fluid, such as blood.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Sinus Problems
Specializing in Minimally Invasive Sinus Surgery (818)349-0600
www.marckernermd.com
Sinusitis
Answers to your questions on Sinusitis, Sinus Infections & more.
yourtotalhealth.ivillage.com
Chronic Sinusitis?
Chronic Sinusitis May Indicate PI. Find Info on Symptoms & Diagnosis.
www.ImmuneDisease.com/Symptom-of-PI
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