the GNU version of the Collaborative International Dictionary of English
adj. Causing, or giving rise to, pressure or to an increase of pressure; ; -- opposed to depressor.
The Century Dictionary and Cyclopedia
Causing constriction of the smaller blood-vessels and a consequent rise of blood-pressure.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. increasing (or tending to increase) blood pressure
n. 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
Word Usage
"If the patient is hypotensive and refractory to IV fluids, pressor agents should be used with extreme caution and the dose carefully titrated to response."