episcotister

noun
ep·​i·​sco·​tis·​ter | \ ˌepəskōˈtistə(r)\
plural -s

Definition of episcotister

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

History and Etymology for episcotister

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

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