episcotister noun. [ɪ'pɪskǝtɪstǝ, ɛ-, ,ɛpɪskǝ'tɪstǝ] E20.
[from Greek episkotizein throw a shadow or darkness over, formed as EPI- + skotos darkness: see -IST, -ER¹.]
A device used in experimental psychology for producing intermittent illumination of an object, consisting of a disc with a sector removed rotating in front of a light source.

[TahlilGaran] English Dictionary ▲