[hyoo-mer-uhl or, often, yoo-]
adjective Physiology.
of, pertaining to, or proceeding from a fluid of the body.

1375–1425; late Middle English < Medieval Latin hūmōrālis. See humor, -al1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
humoral (ˈhjuːmərəl)
1.  immunol denoting or relating to a type of immunity caused by free antibodies circulating in the blood
2.  obsolete of or relating to the four bodily fluids (humours)

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

humoral hu·mor·al (hyōō'mər-əl)

  1. Relating to body fluids, especially serum.

  2. Relating to or arising from any of the bodily humors.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
There are two basic types of immune responses: humoral, or antibody-mediated, and cellular.
Humoral medicine eventually morphed into humoral psychology.
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