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-tron

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  1. a combining form extracted from electron, used with nouns or combining forms, principally in the names of electron tubes (ignitron; klystron; magnetron) and of devices for accelerating subatomic particles (cosmotron; cyclotron); also, more generally, in the names of any kind of chamber or apparatus used in experiments (biotron).
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Origin of -tron

by initial shortening of electron, with perhaps accidental allusion to the Gk instrumental suffix -tron, as in árotron plough
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for tron

tron

noun
  1. a public weighing machine
  2. the place where a tron is set up; marketplace
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Word Origin

C15: from Old French trone, from Latin trutina, from Greek trutanē balance, set of scales

-tron

suffix forming nouns
  1. indicating a vacuum tubemagnetron
  2. indicating an instrument for accelerating atomic or subatomic particlessynchrotron
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Word Origin

from Greek, suffix indicating instrument
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

Word Origin and History for tron

-tron

as a word-forming element in new compounds formed in physics, 1939, abstracted from electron (Greek -tron was an instrumentive suffix).

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Online Etymology Dictionary, © 2010 Douglas Harper