coherer

[ koh-heer-er, -her- ]
/ koʊˈhɪər ər, -ˈhɛr- /

noun

a person or thing that coheres.
Radio. a device usually used in detecting radio waves, as a tube filled with a conducting substance in granular form, whose electrical resistance increases when struck by radio waves.

Origin of coherer

First recorded in 1890–95; cohere + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for coherer

coherer

/ (kəʊˈhɪərə) /

noun

physics an electrical component formerly used to detect radio waves, consisting of a tube containing loosely packed metal particles. The waves caused the particles to cohere, thereby changing the current through the circuit
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