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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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Yet when De Forest rented a theater in 1923 to demonstrate several sound shorts, studio heads showed no interest.

From The Wall Street Journal Feb. 14, 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

But De Forest openly acknowledges one source of his crowded, pushed-forward beings and their staring eyes in “Painting the Big Painting,” a 1993 work that includes figures and faces from Picasso’s “Les Demoiselles d’Avignon.”

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

There is a picture of Southern life which ought to have a wide reading, in Kate Beaumont, a story of South Carolina, written by J. W. De Forest, a Northerner and a Union soldier.

From The Negro and the Nation A History of American Slavery and Enfranchisement by Merriam, George Spring

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