"hollow curve or cavity in the body," early 15c., from Medieval Latin sinus, from Latin sinus "bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land;" also "fold of the toga about the breast," hence "bosom," and figuratively "love, affection, intimacy; interior, inmost part;" of unknown origin.
例文
1. I still suffer from catarh and sinus problems.
私はまだ粘膜炎と副鼻腔炎にかかっています。
2. Sinus arrhythmia also tends to disappear with advancing age.加齢とともに洞性不整脈も消失する傾向にある。
3.This normal variation in rhythm is known as sinus arrhythmia.
リズムのこの正常な変化を洞性不整脈と呼ぶ。
4. Sinus bradycardia occurs when the heart rate falls below 60.
洞性徐脈は心拍数が60回未満である。
5.Reversion to sinus rhythm,by means of electrical countershock,is indicated.