- affecting the diameter of blood vessels: vasoactive peptides
WordReference Random House Unabridged Dictionary of American English © 2026
vas•o•ac•tive
(vas′ō ak′tiv, vā′zō-),USA pronunciation adj. [Physiol., Pharm.]
- Physiology, Drugsof or pertaining to a substance, drug, or event that changes the diameter of a blood vessel.
- vaso- + active 1920–25
Collins Concise English Dictionary © HarperCollins Publishers::
vasoactive /ˌveɪzəʊˈæktɪv/ adj