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speculum

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spec⋅u⋅lum

  [spek-yuh-luhm]
Use speculum in a Sentence
–noun, plural -la  [-luh] , -lums.
1. a mirror or reflector, esp. one of polished metal, as on a reflecting telescope.
2. speculum metal.
3. Surgery. an instrument for rendering a part accessible to observation, as by enlarging an orifice.
4. Ornithology. a lustrous or specially colored area on the wings of certain birds.
Origin:
1590–1600; < L: mirror, equiv. to spec(ere) to look, behold + -ulum instrumental suffix; see -ule
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speculum metal

 
–noun
any of several bronze alloys with a high tin content, often containing other materials, as silver, brass, lead, zinc, or arsenic, used for making mirrors and reflectors.
Also called speculum, speculum alloy.

Origin:
1790–1800
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To speculum
spec·u·lum   (spěk'yə-ləm)   
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.

  3. Zoology

    1. A bright, often iridescent patch of color on the wings of certain birds, especially ducks.

    2. A transparent spot in the wings of some butterflies or moths.


[Middle English, surgical speculum, from Latin, mirror, from specere, to look at; see spek- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: spec·u·lum
Pronunciation: 'spek-y&-l&m
Function: noun
Inflected Form: plural spec·u·la /-l&/ also spec·u·lums
: any of various instruments for insertion into a body passage to facilitate visual inspection or medication speculum> speculum>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

speculum spec·u·lum (spěk'yə-ləm)
n. pl. spec·u·lums or spec·u·la (-lə)

  1. A mirror or polished metal plate that is used as a reflector in optical instruments.

  2. An instrument that is used to dilate the opening of a body cavity for medical examination.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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