Sinus-meridianii



[see-nuh s muh-rid-ee-ah-nee-ee, sahy-nuh s muh-rid-ee-ey-nee-ahy] /ˈsi nəs məˌrɪd iˈɑ niˌi, ˈsaɪ nəs məˌrɪd iˈeɪ niˌaɪ/
noun
1.
an area on the equator of Mars, appearing as a dark region when viewed telescopically from the earth.

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    noun, Anatomy. 1. sinoatrial node. sinus node n. See sinoatrial node.

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  • Sinus-of-valsalva

    [sahy-nuh s uh v val-sal-vuh] /ˈsaɪ nəs əv vælˈsæl və/ noun, Anatomy. 1. any of the pouches of the aorta and the pulmonary artery opposite the flaps of the semilunar valves into which blood returning to the heart flows, closing the valves.

  • Sinus of vena cava

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