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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).
Origin of -tron
by initial shortening of electron, with perhaps accidental allusion to the Gk instrumental suffix -tron, as in árotron plough Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for tron


a public weighing machine
the place where a tron is set up; marketplace
Word Origin
C15: from Old French trone, from Latin trutina, from Greek trutanē balance, set of scales


indicating a vacuum tube: magnetron
indicating an instrument for accelerating atomic or subatomic particles: synchrotron
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
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Word Origin and History for tron


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

Online Etymology Dictionary, © 2010 Douglas Harper
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tron in Technology

1. The Real-Time Operating System Nucleus.
2. (TRace ON) A command used when debugging programs written in early line-numbered BASIC that contained GOTO and GOSUB statements.
When the TRON command had been executed, the program ran with a window open indicating the line number being executed at that instant.
The TROFF (an abbreviation for "TRace OFF") command turned the tracing off.

(NRL, CMU, probably from the film "Tron") To become inaccessible except via electronic mail or talk especially when one is normally available via telephone or in person.
Compare spod.
[Jargon File]

The Free On-line Dictionary of Computing, © Denis Howe 2010
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