OEstruation
OEstruation [OE]s`tru*a"tion, n. (Physiol.) The state of being under [oe]strual influence, or of having sexual desire. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • oestruation — variant of estruation …   Useful english dictionary

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  • oestrus —   n. period of sexual heat; frenzy.    ♦ oestrous, a.    ♦ oestruate, v.i. be on heat.    ♦ oestruation, n …   Dictionary of difficult words

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