va·so·spasm 
(vāzō-spăz′əm)
(vāzō-spăz′əm)n.
A sudden constriction of a blood vessel, causing a reduction in blood flow.
va′so·spastic (-spăstĭk) adj.
- install
- installation
- installation art
- installer
- installment
- installment
- installment plan
- instalment
- instalment
- instance
- instancy
- instant
- instantaneity
- instantaneous
- instantaneously
- instantaneousness
- instanter
- instantiate
- instantiation
- instantiative
- instantly
- instant message
- instant messaging
- instantness
- instant replay