Meaning : Any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs. Maintains or increases blood pressure.
Synonyms : vasoconstrictive, vasoconstrictor
Meaning : Increasing (or tending to increase) blood pressure.
Example :
Pressor reflexes.