noun Etymology: New Latin Date: 1923 a period immediately preceding estrus characterized by preparatory physiological changes

New Collegiate Dictionary. 2001.

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  • proestrus — [prō es′trəs] n. the time period immediately before estrus, characterized by the development of ovarian follicles and the uterine lining …   English World dictionary

  • proestrus — /proh es treuhs/, n. the period immediately preceding estrus. Also, pro oestrus. [1920 25; PRO 1 + ESTRUS] * * * …   Universalium

  • proestrus — noun A phase of the oestrus cycle, prior to sexual receptivity, during which one or more follicles of the ovary begin to grow …   Wiktionary

  • proestrus — The period in the estrus cycle preceding estrus, characterized by the growth of the graafian follicles and physiologic changes related to estrogen production. SYN: proestrum. * * * pro·es·trus es trəs or pro·es·trum es trəm or chiefly Brit pro oe …   Medical dictionary

  • proestrus — pro·estrus …   English syllables

  • proestrus — pro•es•trus or pro oes•trus [[t]proʊˈɛs trəs[/t]] n. phl dvl the period immediately preceding estrus • Etymology: 1920–25 …   From formal English to slang

  • proestrus — …   Useful english dictionary

  • Estrous cycle — Oestrus is also the biological genus name of the gadfly. The estrous cycle (also oestrous cycle; derived from Latin oestrus and originally from Greek οἶστρος meaning sexual desire) comprises the recurring physiologic changes that are induced by… …   Wikipedia

  • Canine reproduction — This article is about a social behavior of domestic dogs. For social behaviors of other canids, see Category:canids. Canine reproduction is a social behavior of the domestic dog. Contents 1 Canine sexual anatomy and development 1.1 General 1.2… …   Wikipedia

  • Sexually dimorphic nucleus — (SDN) is a cluster of cells located in the preoptic area of hypothalamus of the brain that is believed to be related to sexual behavior in animals. The volume of SDN is significantly larger (about twice) in males than in females, caused mainly by …   Wikipedia

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