sinus

名词 n.
中文释义

英文释义

名词 n.
  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. An irregular venous or lymphatic cavity, reservoir, or dilated vessel.; Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat. attributive
  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.
    — So, in the helicopteron, as the helix is at the same time a sustaining plane, it should be likened to a surface moving horizontally, and in which, consequenty, the resistance to motion will be to the lifting power as the sinus is to the cosinus of the angle formed by such plane with the horizon.

词形变化

sinuses plural

词汇关系

衍生词
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

词源

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