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Definition of prostaglandin


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Houghton Mifflin

pros·ta·glan·din  audio  (prst-glndn) KEY 

NOUN:
Any of a group of potent hormonelike substances that are produced in various mammalian tissues, are derived from arachidonic acid, and mediate a wide range of physiological functions, such as control of blood pressure, contraction of smooth muscle, and modulation of inflammation.

ETYMOLOGY:
prosta(te) + gland1 + -in


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