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episcotister

or e·pis·ko·tist·er

[ uh-pis-kuh-tis-ter, ep-i-skuh-tis-ter ]
/ əˈpɪs kəˌtɪs tər, ˌɛp ɪ skəˈtɪs tər /
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noun
a disk with a sector removed that when rotated in front of a light source allows the periodic passage of flashes of light: used in studying the motion of a body.
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QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of episcotister

1900–05; <Greek episkot(ízein) to overshadow (see epi-, scotia, -ize) + -ist + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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