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The period following estrus in most female mammals, when the corpus luteum begins to form.

me·tes′trous (-trəs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(mɛtˈɛstrəs; -ˈiːstrəs)
(Zoology) the US spelling of metoestrus
metˈestrous adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(mɛtˈɛs trəs)

the luteal phase of the reproductive cycle.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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These morphological changes due to the desquamation depict four major phases of the oestrus cycle which include the Proestrus (P), Oestrous (O), Metestrous (M) and Diestrous (D) (Long & Evans, 1922).
Findings from several animal studies suggest that OP exposures could cause disturbances in estrous cycles, resulting in a decrease in the number of estrous cycles and in the duration of proestrus, estrus, and metestrous with a concomitant prolonged diestrous phase, which may ultimately result in reduced fertility (Nanda and Kaliwal 2003; Rao and Kaliwal 2002; Tello et al.
Intermediate cells have polyhedral forms and large area of cytoplasm, the presence of granular chromatin in these type of cells recorded in the small and granulated nucleus (Figure 1b), the proportion of these cells was the highest in the metestrous stage (H: 254.58, p 0.0001).