S s


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [sahy-nuh s]
    • /ˈsaɪ nəs/
    • /ˈsaɪ.nəs/
    • US Pronunciation
    • US IPA
    • [sahy-nuh s]
    • /ˈsaɪ nəs/

Definitions of sinus word

  • noun plural sinus a curve; bend. 1
  • noun plural sinus a curving part or recess. 1
  • noun plural sinus Anatomy. any of various cavities, recesses, or passages, as a hollow in a bone, or a reservoir or channel for venous blood. one of the hollow cavities in the skull connecting with the nasal cavities. an expanded area in a canal or tube. 1
  • noun plural sinus Pathology. a narrow passage leading to an abscess or the like. 1
  • noun plural sinus Botany. a small, rounded depression between two projecting lobes, as of a leaf. 1
  • noun sinus Sinus, Sinus Iridum. 1

Information block about the term

Origin of sinus

First appearance:

before 1590
One of the 37% oldest English words
1590-1600; < Latin sinus (stem sinu-) bent or curved surface, curve, fold

Historical Comparancy

Parts of speech for Sinus


sinus popularity

A common word. It’s meaning is known to most children of preschool age. About 88% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

sinus usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for sinus

noun sinus

  • bursa — a small fluid-filled sac that reduces friction between movable parts of the body, esp at joints
  • bursae — Anatomy, Zoology. a pouch, sac, or vesicle, especially a sac containing synovia, to facilitate motion, as between a tendon and a bone.
  • caries — Caries is decay in teeth.
  • cavity — A cavity is a space or hole in something such as a solid object or a person's body.
  • maturation — the act or process of maturating.

Top questions with sinus

  • how to relieve sinus pressure?
  • how to get rid of a sinus infection?
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  • how to get rid of sinus infections?
  • how to get rid of a sinus headache?
  • what is a sinus infection?
  • how to treat sinus infections?
  • how to get rid of sinus infection?
  • how to get rid of sinus headaches?
  • how long does a sinus infection last?
  • how to treat sinus infection?
  • what cause sinus infections?
  • what causes sinus infection?
  • how to cure a sinus infection?

See also

Matching words

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