angiotensin

[an-jee-oh-ten-sin]
noun Biochemistry.
any of three oligopeptides occurring in plasma, an inactive form (angiotensin I) and two varieties (angiotensin II and angiotensin III) that elevate blood pressure and stimulate the adrenal cortex to secrete aldosterone.

Origin:
1960–65; probably angio(tonin) + (hyper)tensin, earlier names for the substances

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To angiotensin
Collins
World English Dictionary
angiotensin (ˌændʒɪəˈtɛnsɪn)
 
n
a peptide of physiological importance that is capable of causing constriction of blood vessels, which raises blood pressure
 
[from angio- + tense1 + -in]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

angiotensin an·gi·o·ten·sin (ān'jē-ō-těn'sĭn)
n.
Any of a group of peptides with vasoconstrictive activity that function physiologically in controlling arterial pressure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
angiotensin  [%PREMIUM_LINK%]     (ān'jē-ō-těn'sĭn)  Pronunciation Key 
Any of three polypeptide hormones that function in the body in controlling arterial pressure. The most important is known as angiotensin II, a powerful vasoconstrictor that stimulates steroid production by the adrenal glands, reduces fluid loss from the kidneys, and also functions as a neurotransmitter. Angiotensin II is formed from inactive angiotensin I by the action of angiotensin-converting enzyme (or ACE). See also ACE inhibitor, renin.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Kidney secretions of renin synthesize a substance called angiotensin.
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;