[koh-heer-er, -her-]
  1. a person or thing that coheres.
  2. 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for coherer

Historical Examples of coherer

British Dictionary definitions for coherer


  1. 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