Sinus arrhythmia



sinus arrhythmia n.
Irregularity of the heartbeat due to a variation in the sinus rhythm.

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  • Sinus block

    sinus block n. See sinoatrial block.

  • Sinus-iridum

    [see-nuh s ir-i-duh m, sahy-] /ˈsi nəs ˈɪr ɪ dəm, ˈsaɪ-/ noun 1. (Bay of Rainbows) a semicircular dark plain in the second quadrant of the face of the moon.



  • Sinusitis

    noun, Pathology. 1. inflammation of a sinus or the sinuses. noun 1. inflammation of the membrane lining a sinus, esp a nasal sinus sinusitis si·nus·i·tis (sī’nə-sī’tĭs) n. Inflammation of the mucous membrane of a sinus, especially of the paranasal sinuses.

  • 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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