Speculum

Meanings of speculum include:

• A medical tool used for examing body cavities; see Speculum (medical).
• A small metal mirror used for telescopes.
• The secondary feathers on the inner part of a duck's wing which are often brightly coloured; see speculum feathers.
• A journal of medieval studies, published by the Medieval Academy of America; see Speculum (magazine).
• Speculum metal is an alloy containing copper and tin at least.
• Ophrys speculum is a species of ground orchid.

The titles of a number of medieval books also include the word speculum:

• Speculum alchimiae, written by Roger Bacon.
• Speculum astronomiae, written by Albertus Magnus.
• Speculum ecclesiae, written by Edmund Rich.
• Speculum historiale, written by Vincent de Beauvais.
• Speculum judiciale, written by Guillaume Durand.
• Speculum meditantis, written by John Gower.
• Speculum perfectionis, written by Brother Leo.

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