• WordNet 3.6
    • adj pressor increasing (or tending to increase) blood pressure "pressor reflexes"
    • n pressor 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
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Webster's Revised Unabridged Dictionary
    • a Pressor (Physiol) Causing, or giving rise to, pressure or to an increase of pressure; as, pressor nerve fibers, stimulation of which excites the vasomotor center, thus causing a stronger contraction of the arteries and consequently an increase of the arterial blood pressure; -- opposed to depressor.
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Century Dictionary and Cyclopedia
    • pressor Causing constriction of the smaller blood-vessels and a consequent rise of blood-pressure.
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In literature:

Pressor beams beat upon them in vain.
"Spacehounds of IPC" by Edward Elmer Smith
Tractor and pressor beams were known to men, of course, but human beings used them only under very special conditions.
"The Aliens" by Murray Leinster

In news:

A thermometer for measuring the bone-jarring temperature of an ice-filled cold pressor: $30.
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