Pronunciation: (kun-strik'shun),[key] —n. 1. the act of constricting.
2. the state of being constricted; tightness or inward pressure.
3. a constricted part.
4. something that constricts.
5. Phonet.an articulated narrowing of the vocal tract that in consonants audibly obstructs the flow of air and in vowels defines an interconnection between or among resonance cavities. Cf. closure (def. 6).