oestruationestruationn.

Brit.

/ˌiːstrʊˈeɪʃn/,

/ˌɛstrʊˈeɪʃn/, U.S.

/ˌɛsˈtreɪʃ(ə)n/,

/ˌɛstrəˈweɪʃ(ə)n/

Origin: Formed within English, by derivation. Etymons: oestrum n., oestrus n., -ation suffix.

Etymology: Irregularly < oestrum n. or oestrus n. + -ation suffix, after menstruation n. Compare oestrual adj., and later oestruate v.

Physiology and Zoology. Now rare.

The condition of being in oestrus.

ΘΚΠ

the world > animals > animal body > general parts > sexual organs and reproduction > [noun] > mating > rut

rutc1381

rutsonc1425

pride1483

shaleur1509

rutting1575

orgasm1754

heat1768

oestrum1773

oestruation1857

oestrus1890

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Œstruation,..the state of being under influence of the œstrum.

1859 J. C. Dalton Treat. Human Physiol. ii. v. 471 The ripening and discharge of the egg are accompanied by a peculiar condition of the entire system, known as the ‘rutting’ condition, or ‘œstruation’.

1883 Brit. Med. Jrnl. 3 Mar. 398/1 Observation of wild animals..shows that, after a definite period of quiescence, œstruation, or the ‘rut’, invariably recurs at epochs which strictly conform to some multiple of weeks.

1924 Amer. Jrnl. Physiol. 68 294 (title) The effect of pubescence, oestruation and menopause on the voluntary activity in the albino rat.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	oestruation
释义	oestruationestruationn. Brit. /ˌiːstrʊˈeɪʃn/, /ˌɛstrʊˈeɪʃn/, U.S. /ˌɛsˈtreɪʃ(ə)n/, /ˌɛstrəˈweɪʃ(ə)n/ Origin: Formed within English, by derivation. Etymons: oestrum n., oestrus n., -ation suffix. Etymology: Irregularly < oestrum n. or oestrus n. + -ation suffix, after menstruation n. Compare oestrual adj., and later oestruate v. Physiology and Zoology. Now rare. The condition of being in oestrus. ΘΚΠ the world > animals > animal body > general parts > sexual organs and reproduction > [noun] > mating > rut rutc1381 rutsonc1425 pride1483 shaleur1509 rutting1575 orgasm1754 heat1768 oestrum1773 oestruation1857 oestrus1890 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Œstruation,..the state of being under influence of the œstrum. 1859 J. C. Dalton Treat. Human Physiol. ii. v. 471 The ripening and discharge of the egg are accompanied by a peculiar condition of the entire system, known as the ‘rutting’ condition, or ‘œstruation’. 1883 Brit. Med. Jrnl. 3 Mar. 398/1 Observation of wild animals..shows that, after a definite period of quiescence, œstruation, or the ‘rut’, invariably recurs at epochs which strictly conform to some multiple of weeks. 1924 Amer. Jrnl. Physiol. 68 294 (title) The effect of pubescence, oestruation and menopause on the voluntary activity in the albino rat. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1857
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