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micrometer An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of... Read More

Goldfish (Science: zoology) a small domesticated cyprinoid fish (Carassius auratus); so named from its colour. It is native... Read More

naked 1. Having no clothes on; uncovered; nude; bare; as, a naked body; a naked limb; a naked sword. 2. Having no means of... Read More

Definition adjective Of, pertaining to, or corresponding to land (on earth), as opposed to water and air Supplement The term... Read More

Back aperture (Science: microscopy) The exit pupil of a microscope objective lens. The objective lens back aperture, which... Read More

Compound microscope (Science: instrument) a microscope (an optical instrument that augments the power of the eye to see... Read More

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