English Dictionary

sinus

IPA（発音記号）

/ˈsaɪ.nəs/

名詞

限定用法 Lua実行エラー

(anatomy, zootomy) 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).

日本語の意味

（解剖学）骨やその他の組織内に存在する空洞。特に、顔面や頭蓋骨の骨にある、鼻腔と連絡する空洞（副鼻腔）

The CT scan revealed an inflamed maxillary sinus filled with fluid.

CT検査で炎症を起こして液体で満たされた上顎洞が確認されました。

意味（1）

(anatomy, zootomy) 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).

意味（2）

(anatomy) An irregular venous or lymphatic cavity, reservoir, or dilated vessel.

意味（3）

(physiology, attributive) Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.

意味（4）

(pathology) An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.

意味（5）

(botany) A rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.

意味（6）

(geography) A bay of the sea; a recess in the shore.

意味（7）

(trigonometry) 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.

sinuses （ plural ）