Sudden constriction of a vein.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
venospasm(vē′nō-spăzm) [″ + Gr. spasmos, a convulsion]
Contraction of a vein, which may follow infusion of a cold or irritating substance into the vein.
Medical Dictionary, © 2009 Farlex and Partners