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
lypressin 1
noundomain: artefact
Princeton WordNet [ver.3.1]
English
Definition
an antidiuretic and vasoconstrictor used to treat diabetes insipidus