- Thomas Al·va [al-vuh] /ˈæl və/, 1847–1931, U.S. inventor, especially of electrical devices.
- a township in central New Jersey.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Thomas Alva. 1847–1931, US inventor. He patented more than a thousand inventions, including the phonograph, the incandescent electric lamp, the microphone, and the kinetoscope
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
- American inventor and physicist who took out more than 1,000 patents in his lifetime. His inventions include the telegraph (1869), microphone (1877), and light bulb (1879). He also designed the first power plant (1881-82), making possible the widespread distribution of electricity. During World War I, Edison worked on a number of military devices, including flamethrowers, periscopes, and torpedoes.
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