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1. Oxford American Dictionary

   speculum

   • IPA[ˈspəkyələm]

   美式

   • n.
     a metal or plastic instrument that is used to dilate an orifice or canal in the body to allow inspection.；a bright patch of plumage on the wings of certain birds, especially a strip of metallic sheen on the secondary flight feathers of many ducks.

   • noun: speculum, plural noun: specula

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. a metal or plastic instrument that is used to dilate an orifice or canal in the body to allow inspection.
   • 2. a bright patch of plumage on the wings of certain birds, especially a strip of metallic sheen on the secondary flight feathers of many ducks.
   • 3. a mirror or reflector of glass or metal, especially (formerly) a metallic mirror in a reflecting telescope.
   • ▪ short for speculum metal

   speculum metal

   • n.
     an alloy of copper and tin used to make mirrors, especially formerly for telescopes.

   Oxford American Dictionary

   speculum metal

   • n.
     an alloy of copper and tin used to make mirrors, especially formerly for telescopes.

   Oxford Dictionary

3. • 更多解釋

   speculum

   • IPA[ˈspɛkjʊləm]

   英式

   • n.
     a metal instrument that is used to dilate an orifice or canal in the body to allow inspection.

   Oxford Dictionary