Te‐len″gi‐scope (?), n. [Gr. τη̑λε far + � near + -scope.] (Optics) An instrument of such focal length that it may be used as an observing telescope for objects close at hand or as a long-focused microscope.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.