限げん外がい顕けん微び鏡きょう

noun

ultramicroscope

A specialized optical instrument used to observe particles smaller than the wavelength of visible light, often in colloid science. Technical term.

• 限げん外がい顕けん微び鏡きょうはコロイド粒りゅう子しの観かん察さつに使つかわれる。

  An ultramicroscope is used to observe colloidal particles.