From pre(gnant) + mare + -in.
Formed from pregnant + mare + -in
Latin praegnāns
Old French preignant
Middle English preignant
English pregnant
Proto-Indo-European *márkos ‘horse’
…
Proto-Germanic *marhijō ‘female horse’
Proto-West Germanic *marhijā ‘mare, female horse’
Old English mīere ‘female horse, mare’
Middle English mare ‘a horse’
English mare
Today it means
name A trademark for a mixture of estrogenic compounds obtained from the urine of pregnant mares and used chiefly for estrogen replacement therapy.
Language periods are conventional ranges, not dates for this word.
Etymograph / Premarin
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