any of a group of hormonelike fatty acids found throughout the body, esp. in semen, that affect blood pressure, metabolism, body temperature, and other important body processes
Origin of prostaglandinfrom prostate + gland + -in
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.
Origin of prostaglandinprosta(te) gland ( from the mistaken belief that the first prostaglandin discovered was secreted by the prostate ) -in
From German Prostaglandin, corresponding to prosta(te) + gland + -in (because it was originally believed to be secreted from the prostate).