Sinus

Pronunciation: /ˈsaɪnəs/

Definitions of sinus

noun a hollow cavity within a bone or other tissue, especially one in the bones of the face connected to the nasal cavities.

Example Sentences

A1 My doctor told me I have a sinus infection.

A2 She suffers from chronic sinusitis and often has trouble breathing.

B1 The sinus cavity is located in the skull and helps with air circulation.

B2 The sinus pressure from my cold is causing a headache.

C1 The sinusoidal wave pattern was used to analyze the data.

C2 The surgeon performed a sinus surgery to correct the deviated septum.

Examples of sinus in a Sentence

formal The doctor diagnosed her with a sinus infection and prescribed antibiotics.

informal I can't come to the party tonight, I have a bad sinus headache.

slang My sinuses are killing me today, I can't stop sneezing.

figurative The congestion in the city was like a sinus blockage, causing traffic to come to a standstill.

Grammatical Forms of sinus

• plural: sinuses
• comparative: more sinus
• superlative: most sinus
• present tense: sinus
• future tense: will sinus
• perfect tense: have sinned
• continuous tense: is sinusing
• singular: sinus
• positive degree: sinus
• infinitive: to sinus
• gerund: sinusing
• participle: sinned

Origin and Evolution of sinus

First Known Use: 1250 year

Language of Origin: Latin

Story behind the word: The word 'sinus' originated from Latin, where it referred to a curve or bend, particularly in reference to the curves of a bay or gulf.

Evolution of the word: Over time, the term 'sinus' evolved to also refer to a cavity or hollow space in anatomy, particularly in reference to the nasal sinuses. The term has retained its anatomical meaning in modern usage.