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Definition of proestrus - 4 dictionary results
Proestrous
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pro⋅es⋅trus

  [proh-es-truhs]
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–noun
the period immediately preceding estrus.
Also, pro-oestrus.

Origin:
1920–25; pro- 1 + estrus
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Proestrous
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pro·es·trus   (prō-ěs'trəs)   
n.  The period immediately before estrus in most female mammals, characterized by development of the endometrium and ovarian follicles.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: pro·es·trus
Pronunciation: -'es-tr&s
Variants: or pro·es·trum /-'es-tr&m/ or chiefly British pro–oes·trus or pro–oes·trum /-'Es-/
Function: noun
: a preparatory period immediately preceding estrus andcharacterized by growth of graafian follicles, increased estrogenic activity, and alteration of uterine and vaginal mucosa
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

proestrus pro·es·trus (prō-ěs'trəs)
n.
The period immediately before estrus in most female mammals, characterized by development of the endometrium and ovarian follicles.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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