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estrous cycle

noun
1.
a series of physiological changes in sexual and other organs in female mammals, extending from one period of heat to the next, accompanied by behavioral changes indicating interest in mating.
Origin
1895-1900
1895-1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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estrous cycle in Medicine

estrous cycle n.
The recurrent set of physiological and behavioral changes that take place from one period of estrus to another.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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estrous cycle in Science
estrous cycle
  (ěs'trəs)   
The series of changes that occur in the female of most mammals from one period of estrus to another. The estrous cycle usually takes place during the period known as the breeding season, which ensures that young are born at a time when the chance of survival is greatest. The length of the cycle varies from species to species.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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