What does "rheostat" mean?

An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider.

How do you pronounce "rheostat"?

Pronounced //ˈɹiː.ə.stat//.

Common synonyms include: variable resistor, adjustable resistor, device, dimmers, electrical parts and devices, generator.

/ˈɹiː.ə.stat/ noun

noun ·Rare ·Advanced level

Noun

1
An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider.
2
resistor for regulating current wordnet

From rheo- + -stat.