speculum(redirected from bivalve speculum)
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n. pl. spec·u·la (-lə) or spec·u·lums
1. A mirror or polished metal plate used as a reflector in optical instruments.
2. An instrument for dilating the opening of a body cavity for medical examination.
a. A bright, often iridescent patch of color on the wings of certain birds, especially ducks.
b. A transparent spot in the wings of some butterflies or moths.
n, pl -la (-lə) or -lums
1. (General Physics) a mirror, esp one made of polished metal for use in a telescope, etc
2. (Medicine) med an instrument for dilating a bodily cavity or passage to permit examination of its interior
3. (Zoology) a patch of distinctive colour on the wing of a bird, esp in certain ducks
[C16: from Latin: mirror, from specere to look at]
spec•u•lum(ˈspɛk yə ləm)
n., pl. -la (-lə), -lums.
1. a mirror or reflector, esp. one of polished metal, as on a reflecting telescope.
2. a medical instrument for rendering a part accessible to observation, as by enlarging an orifice.
3. a lustrous or colored area on the wings of certain birds.
[1590–1600; < Latin: mirror, derivative of spec(ere) to look]
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|Noun||1.||speculum - a mirror (especially one made of polished metal) for use in an optical instrument|
mirror - polished surface that forms images by reflecting light
|2.||speculum - a medical instrument for dilating a bodily passage or cavity in order to examine the interior|
medical instrument - instrument used in the practice of medicine