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thermesthesia
-thermic
thermic
thermic lance
thermion
thermionic current
thermionic emission
thermionic tube
thermionic valve
thermionics
thermistor
thermite process
thermo-
thermobaric
thermobarometer
thermocautery
thermochemistry
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thermionic valve
therm·i·on·ic valve (plural therm·i·on·ic valves)


noun 
Definition:
 
Canada 
Same as  thermionic tube
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