vacuum tube

noun 0.717

valve

noun 0.639

electron tube

noun 0.625

thyristor

noun 0.611

ball valve

noun 0.610

triode

noun 0.605

thermocouple

noun 0.604

exhaust valve

noun 0.602

cathode-ray tube

noun 0.595

piston valve

noun 0.595

check valve

noun 0.588

return valve

noun 0.587

needle valve

noun 0.584

pentode

noun 0.580

heart valve

noun 0.576

safety valve

noun 0.575

transistor

noun 0.574

hot cathode

noun 0.571

suction valve

noun 0.569

relief valve

noun 0.568

thermopile

noun 0.567

microvalve

noun 0.566

thermistor

noun 0.566

tetrode

noun 0.564

incandescent lamp

noun 0.560

thermostat

noun 0.555

demand valve

noun 0.553

theremin

noun 0.552

valvula

noun 0.549

therm

noun 0.548

phototube

noun 0.547

tricuspid valve

noun 0.547

poppet valve

noun 0.537

valva

noun 0.533

reversing valve

noun 0.532

thermometer

noun 0.530

klystron

noun 0.529

tunnel diode

noun 0.528

valve train

noun 0.528

junction transistor

noun 0.525

photomultiplier tube

noun 0.524

vacuum flask

noun 0.523

lamp bulb

noun 0.522

semilunar valve

noun 0.521

electron gun

noun 0.520

magnetron

noun 0.519

thermos

noun 0.517

fluorescent tube

noun 0.517

incandescent

noun 0.515

thermoscope

noun 0.511

transistor radio

noun 0.510

gyrotron

noun 0.509

thermonuclear

noun 0.509

thermopower

noun 0.509

thermoelectricity

noun 0.508

diode

noun 0.507

steam turbine

noun 0.507

thermoluminescence

noun 0.506

boiler

noun 0.503

cathode

noun 0.503

boiler tube

noun 0.502

thermonuclear weapon

noun 0.501

light bulb

noun 0.501

photocathode

noun 0.501

thorium

noun 0.500