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De Forest

American  
[di fawr-ist, for-] / dɪ ˈfɔr ɪst, ˈfɒr- /

noun

  1. Lee, 1873–1961, U.S. inventor of radio, telegraphic, and telephonic equipment.


De Forest British  
/ də ˈfɒrɪst /

noun

  1. Lee. 1873–1961, US inventor of telegraphic, telephonic, and radio equipment: patented the first triode valve (1907)

"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

Example Sentences

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The concept of the Great American Novel, introduced by John W. De Forest in 1868, has always been a mirage, since the country is too varied to be contained in a single work.

From The Wall Street Journal Jun. 19, 2026

Wisconsin purchasing agents on March 26 paid $19,799 for 2,100 N95s at an Ace Hardware in De Forest.

From Washington Times Dec. 19, 2020

And many of them — De Forest in particular — pursued a kind of hallucinatory visual overload in advance of the counterculture.

From New York Times Apr. 9, 2020

Artists included in this show at the Parker include figures such as Wallace Berman, Kurt Schwitters, Roy De Forest and Franklin Williams.

From Los Angeles Times Jun. 13, 2019

When she went to Philadelphia, Green, who was shadowing her, entirely unknown to De Forest, found that she frequented a famous restaurant on Eighth street, where she met Mr. Hastenbrook.

From The Expressman and the Detective by Pinkerton, Allan

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