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nephoscope

American  
[nef-uh-skohp] / ˈnɛf əˌskoʊp /

noun

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


nephoscope British  
/ ˈnɛfəˌskəʊp /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of nephoscope

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg