millions degrees centigrade?.................
Yes, hence a major problem (expense) in fusion power.
Yes, that's what you get when you convert the particle energy in the plasma, measured in eV (electron Volts), to centigrade. A bit pointless, really, but it wows the masses.
More here:
https://en.wikipedia.org/wiki/Electronvolt
“For example, a typical magnetic confinement fusion plasma is 15 keV, or 170 megakelvin.”