episcotister

noun ep·i·sco·tis·ter \ˌepəskōˈtistə(r)\

Definition of episcotister

plural

-s

  1. :  a device for reducing the intensity of light in known ratio by means of rapidly rotating opaque and transparent sectors

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Origin and Etymology of episcotister

from (assumed) Greek episkotistos (verbal of Greek episkotizein to shadow, darken, from epi- + skotizein to darken, from skotos dark + -izein -ize) + English -er — more at shade


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