stenosis

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ste·no·sis / stəˈnōsis/ • n. (pl. -ses / -ˌsēz/ ) Med. the abnormal narrowing of a passage in the body. DERIVATIVES: ste·nosed / stəˈnōst; -nōzd/ adj. ste·nos·ing / -ˈnōsing; -ˈnōz-/ adj. ste·not·ic / stəˈnätik/ adj.

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stenosis (sti-noh-sis) n. the abnormal narrowing of a passage or opening, such as a blood vessel or heart valve. See aortic stenosis, carotid-artery stenosis, mitral stenosis, pulmonary (stenosis), pyloric stenosis.