sinus

/ˈsaɪnəs/ (bre, ipa) · /ˈsaɪnəs/ (ame, ipa) · /ˈsī-nəs/ (ame, mw)

sinus — 名詞

  • sinussingular
  • sinusesplural

1. small air-filled spaces inside the skull bones around the nose and eyes that pro

1.名詞B2
釋義

鼻竇

頭骨內充滿氣體的空腔

small air-filled spaces inside the skull bones around the nose and eyes that produce mucus and help keep the head lighter — when these become blocked or infected, a person feels pain and pressure in the face.

例句

Aisha went to the clinic because the pressure in her sinuses made her forehead ache.

Aisha 去診所看診,因為她鼻竇的壓力讓她額頭發痛。

collocation: sinus pressure

Mei-Lin needed antibiotics to clear up her sinus infection after ten days of facial pain.

Mei-Lin 臉痛了十天,需要服用抗生素才能治好她的鼻竇感染。

collocation: sinus infection

同義詞
  • cavity

    A more general term for any hollow space; not specific to the head or nose.

  • nasal passage

    The air channel inside the nose, distinct from the bony sinuses around it.

文法句型

sinus + noun: sinus infection / sinus pressure

plural: sinuses

用法筆記

Frequently appears in the plural form 'sinuses' when referring to the nasal cavities as a group. Individual sinuses are named by location — frontal, maxillary, ethmoid, and sphenoid.

常見錯誤

I have a sinus.
I have a sinus infection.
💡'sinus' alone means the cavity, not the illness.
My sinus is hurting on one side.
My sinuses are hurting on one side.
💡even a single location involves paired structures.

2. a narrow channel that develops inside the body when an infection creates a pathw

2.名詞C1
釋義

瘻管

膿液排出體表的通道

a narrow channel that develops inside the body when an infection creates a pathway for pus to drain from an infected area through the skin or mucous membrane.

例句

The dentist spotted a small sinus on Fatima's gum where pus from the infected tooth was draining.

牙醫在 Fatima 的牙齦上發現一個小瘻管,受感染的牙齒正從那裡排出膿液。

collocation: dental sinus

Dr. Okafor cleaned the sinus tract and prescribed antibiotics to remove the source of infection.

Okafor 醫師清理了瘻管通道,並開立抗生素來根除感染的來源。

collocation: sinus tract

同義詞
  • fistula

    The formal medical term for an abnormal passage between two body parts or from inside to outside.

  • tract

    A more general term for a pathway in the body, not necessarily carrying pus.

文法句型

sinus + noun: sinus tract

dental / draining + sinus

用法筆記

In medical writing the term 'sinus tract' or 'draining sinus' is preferred to avoid confusion with nasal sinuses. Commonly follows an infection, surgery, or injury.

常見錯誤

He has a sinus from his tooth.
He has a dental sinus from his infected tooth.
💡specify the type to avoid confusion with nasal sinuses.

3. a small group of cells in the upper right chamber of the heart that produces ele

3.名詞C1
釋義

竇房結

控制心跳節律的心臟組織

a small group of cells in the upper right chamber of the heart that produces electrical signals to control the heartbeat and keep a regular rhythm, also called the sinoatrial node.

例句

The sinus node sends out tiny electrical pulses about sixty to one hundred times every minute.

竇房結每分鐘發出六十到一百次微小的電脈衝。

collocation: sinus node

When the sinus node stops working properly, a person's heartbeat may become dangerously slow.

當竇房結無法正常運作時,人的心跳可能會變得異常緩慢。

同義詞
  • sinoatrial node

    The full anatomical name; 'sinus node' is a shortened form.

  • pacemaker

    A device that does the same job artificially, or used informally to describe the node itself.

文法句型

sinus node + verb: generates / sends / controls

用法筆記

Almost always paired with 'node' — the standalone word 'sinus' in a cardiology context is understood as 'sinus node.' The normal heartbeat rhythm produced here is called 'sinus rhythm.'

常見錯誤

The sinus in his heart is damaged.
The sinus node in his heart is damaged.
💡'sinus node' is the standard term, not 'sinus' alone.

4. a wide channel inside the skull that collects blood without oxygen from the brai

4.名詞C2
釋義

靜脈竇

顱內輸送缺氧血的管道

a wide channel inside the skull that collects blood without oxygen from the brain and carries it back toward the heart, differing from normal veins because its walls are made of tough outer membrane rather than muscle.

例句

A blood clot in a cerebral venous sinus can prevent used blood from leaving the brain.

大腦靜脈竇裡的血栓會阻礙廢血離開腦部。

collocation: venous sinus

The surgeon carefully worked around the large dural sinuses while removing the brain tumor.

外科醫師在切除腦瘤時,小心地避開大型硬腦膜靜脈竇。

collocation: dural sinus

同義詞
  • dural sinus

    Specifically refers to the channels between layers of the dura mater in the brain.

  • venous lake

    A very rare alternative term for a similar structure, not standard in anatomy.

文法句型

venous / dural / cerebral + sinus

用法筆記

Most commonly paired with an adjective specifying location — 'dural sinus,' 'cerebral sinus,' 'cavernous sinus.' The structure is classified as a sinus rather than a vein because of its unique wall composition.

常見錯誤

A sinus in his leg is blocked.
A vein in his leg is blocked.
💡venous sinuses exist only in the skull, not in the limbs.