Biamping w/ a 5 channel amp?

Ok...if your using a HT 5 channel amp
and decide to run the fronts to the highs and the rears to the lows.
Is this biamping?

If the amp in question uses a single power supply...wouldn't this be technically biwiring? since if the lows drive the amp to clipping won't it clip the fronts also?

I hope this makes sense!

(Ps this isn't something I'm trying...my brain is just jumping through hoops tonight and I was hoping someone could set me straight!)