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vasotonic

American  
[vas-oh-ton-ik, vey-zoh-] / ˌvæs oʊˈtɒn ɪk, ˌveɪ zoʊ- /

adjective

Physiology.
  1. pertaining to or regulating the tone of the blood vessels.


Etymology

Origin of vasotonic

vaso- + tonic