English Explanatory Dictionary

sinus

English dictionary entry

Meanings

noun
  1. A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus).
  2. An irregular venous or lymphatic cavity, reservoir, or dilated vessel.
  3. Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.
  4. An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.
  5. A rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.
  6. A bay of the sea; a recess in the shore.
  7. Synonym of sine.

Pronunciation

/ˈsaɪ.nəs/ LL-Q1860 (eng)-Vealhurl-sinus.wav

Word forms

sinus sinuses

Etymology

Learned borrowing from Latin sinus (“a bent surface, curve, hollow”). Doublet of sine.

Synonyms

sine

Derived words

confluence of sinuses dural sinus dural venous sinus extrasinus inferior petrosal sinus inferior sagittal sinus intrasinus nonsinus parasinus pyriform sinus sick sinus syndrome sinal sino- sinu- sinuso- sinus brady sinuscope sinusectomy sinusitis sinuslike sinus node sinusoid sinusopathy sinusotomy sinus pudoris sinus rhythm sinus tachy sinus tachycardia sinus venosus sinus-wise sphenoidal sinus splenic sinus superior petrosal sinus superior sagittal sinus urogenital sinus venosinus

Translations

Chinese Mandarin: 竇 /窦
This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.
Back to search All on S Russian dictionary Dahl dictionary