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sinus

sinus

40 3.9
An air-filled cavity in skull bones near the nose that connects to the inside of the nose
  • noun
  • /ˈsaɪnəs/
  • Specialized
translation icon : seno paranasal
  • The doctor explained how sinus infections can cause facial pain.
  • paranasal sinuses
  • maxillary sinus
  • ethmoid sinuses

So did we do sinus rinse last time?

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Examples

  • That cleared out the sinuses.

  • That's what life with sinus congestion feels like.

  • Or it might be a chronic sinus issue.

  • Since I moved to the east coast, my sinuses have been going crazy.

  • Since then my sinuses just haven't been the same.

  • The Santa Anas bother my sinuses.

  • Direct delivery of medication to the sinuses with standard nebulizers is difficult to achieve.

    Academic text (1999)
  • Two studies have revealed an increased incidence of sinus infections in seropositive patients with advancing HIV disease.

    Academic text (1998)
  • In Finland, it is very popular to study the maxillary sinuses using ultrasound, especially in children.

    Academic text (1998)
  • It opens your sinuses.

Synonyms

frontal sinus
vssinus
  • Specialized
1 5.3

An air space in the bone above each eye

is the wider skull cavity category that covers these forehead spaces
paranasal sinus
vssinus
  • Specialized
1 5.4

Air-filled spaces in the bones around the nose that connect to the inside of the nose

is the general term for skull air spaces that open into the nose
maxillary sinus
vssinus
  • Specialized
1 6.4

An air space in the upper jaw on each side of the nose

is the broader skull cavity type that includes these upper jaw spaces
sinus paranasales
vssinus
  • Specialized
6.7

Hollow spaces in the bones around the nose lined with a thin wet layer

is the general label for skull cavities that connect with the nasal passages
nasal sinus
vssinus
  • Specialized
3.7

An air space in the bones near the nose lined with mucus

is the broader skull cavity concept linking those facial spaces to the nose
ethmoidal sinus
vssinus
  • Specialized
7.5

A small air space in the bone between the nose and eyes that opens into the nose

is the general skull cavity term encompassing these specific ethmoid spaces
ethmoid sinus
vssinus
  • Specialized
6.9

A small air-filled space in the bone between the nose and the eyes

is the broader label for skull cavities that include these behind-nose spaces
sinus ethmoidales
vssinus
  • Specialized
8.2

Small air spaces in the bone between the eyes behind the nose bridge that connect to the nose

is the inclusive term for skull air-filled cavities that open into the nose

Compounds

cavernous sinus
  • Specialized
1 8.2

A large area of veins on each side of the pituitary gland that drains blood from the brain and face

frontal sinus
  • Specialized
1 5.3

An air space in the bone above each eye

Pain in the head from blocked or infected sinuses near the nose

coronary sinus
  • Specialized
1 7.0

A short vein that collects blood from the heart muscle and carries it to the right atrium

maxillary sinus
  • Specialized
1 6.4

An air space in the upper jaw on each side of the nose

paranasal sinus
  • Specialized
1 5.4

Air-filled spaces in the bones around the nose that connect to the inside of the nose

ethmoid sinus
  • Specialized
6.9

A small air-filled space in the bone between the nose and the eyes

ethmoidal sinus
  • Specialized
7.5

A small air space in the bone between the nose and eyes that opens into the nose

nasal sinus
  • Specialized
3.7

An air space in the bones near the nose lined with mucus

Phocoena sinus
  • Specialized
9.9

A small sea mammal like a dolphin that lives only in the Gulf of California and is almost extinct

tentorial sinus
  • Specialized
9.9

A small vein that drains blood from the brain's outer covering near the tentorium

transverse sinus
  • Specialized
9.1

A channel in the outer layer covering the brain that drains blood from the back of the head

sigmoid sinus
  • Specialized
9.1

A large S-shaped vein in the covering of the brain that takes blood to a vein in the neck

sinus coronarius
  • Specialized
8.8

A short vein in the heart that collects blood from the heart's veins into the right atrium

sinus ethmoidales
  • Specialized
8.2

Small air spaces in the bone between the eyes behind the nose bridge that connect to the nose

sinus paranasales
  • Specialized
6.7

Hollow spaces in the bones around the nose lined with a thin wet layer

sinus rectus
  • Specialized
9.9

A large channel in the covering of the brain that drains blood

sinus cavernosus
  • Specialized
9.9

One of a pair of large veins at the base of the brain that drain blood from it

sinus sigmoideus
  • Specialized
9.9

A large S-shaped vein at the back of the skull that carries blood from the brain

sinus tachy
  • Jargon
6.8

A fast heartbeat that starts in the heart's natural pacemaker

sinus transversus
  • Specialized
9.9

A channel of veins in the brain's outer covering that carries blood toward the neck

sinus venosus sclerae
  • Specialized
9.9

A ring-shaped channel in the eye that drains fluid into veins

straight sinus
  • Specialized
9.0

A large vein in the outer covering of the brain that carries blood from deep brain veins

venous sinus
  • Specialized
7.7

A large channel in the body, often in the brain, that holds blood and has thin walls

How Large

bodily cavity
  • Specialized
5.1
cavum
  • Specialized
1 9.9
chamber
271 3.9
sinus
  • Specialized
40 3.9

Surface Forms

sinus singular
sinuses plural

Etymology

Sinus comes from the Latin word sinus, meaning 'bay' or 'hollow'. This is a useful picture for the air-filled 'bays' in the bones around the nose, so sinus today often means the hollow spaces in the skull that can fill with fluid or become inflamed.