nephoscope

[nef-uh-skohp]

noun

1. an instrument for determining the speed and direction of cloud motion.

nephoscope

/ ˈnɛfəˌskəʊp /

noun

1. an instrument for measuring the altitude, velocity, and direction of movement of clouds

Word History and Origins

Origin of nephoscope¹

First recorded in 1880–85; nepho- + -scope

Example Sentences

Several thousand observations with various agencies, such as kites and pilot balloons and more especially measurements made with theodolites and nephoscopes, show that there is a definite twist to the right with elevation.

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Close by there was also a nephoscope for determining the motion of clouds.

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While taking the observations at midnight, he noticed St. Elmo's fire, a "brush discharge" of electricity, on the points of the nephoscope.

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