Tein'o-scōpe, n.

n. [From Gr. τείνειν, to extend, and σκοπεῖν, σκέπτεσθαι, to view.] An instrument, called also the prism telescope, formed by combining prisms so that the chromatic aberration of the light is corrected, and the linear dimensions of objects seen through them increased or diminished. Brande.