- 1The action of making something narrower by pressure or of becoming narrower; tightening: asthma is a constriction of the airwaysMore example sentences
- Sponges are capable of regulating the amount of flow through their bodies by the constriction of various openings.
- The initial phase of the process is vascular constriction.
- Similarly, histamine arises in many tissues by the decarboxylation of histidine, which in excess causes constriction or dilation of various blood vessels.
- 1.1A place where something has become tighter or narrower; an obstruction: flow was impeded at bends and constrictionsMore example sentences
- The diagnosis is emended to include the new observation of basal constrictions at dichotomies.
- The treated limb will show patchy areas of pallor caused by arteriolar constriction.
- The aganglionic segment is of normal caliber without stricture or constriction.