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.

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De Forest British  

/ də ˈfɒrɪst /

noun

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

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Example Sentences

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

Another De Forest touch is the cameo scene within the larger image.

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