[vas-oh-pres-er, vey-zoh-]
noun Biochemistry, Pharmacology.
a hormone, as epinephrine, or other agent that raises the blood pressure by causing contraction of the arteriole muscles, narrowing the arteriole passage.

1925–30; vaso- + pressor Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
vasopressor (ˌveɪzəʊˈprɛsə)
1.  causing an increase in blood pressure by constricting the arteries
2.  a substance that has such an effect

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

vasopressor va·so·pres·sor (vā'zō-prěs'ər)
Producing constriction of the blood vessels and a consequent rise in blood pressure. n.
An agent that causes a rise in blood pressure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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