Definition of speculum
plural spec·u·laplay \-lə\ also spec·u·lums
1 : an instrument inserted into a body passage especially to facilitate visual inspection or medication
2 : a drawing or table showing the relative positions of all the planets (as in an astrological nativity)
3 : a patch of color on the secondaries of most ducks and some other birds
Origin of speculum
Middle English, from Latin, mirror, from specere
First Known Use: 15th century
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Medical Dictionary: Definition of "speculum"
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