What does Q= CM delta t mean

Has something to do with heat or energy, I just forgot what the terms mean.

Actually it should read dQ = CM dT; where dQ is the change (flow) in heat energy, C is the heat coefficient for the mass M in kg, and dT (your delta t) is the difference in temperature in degree Kelvin.

If C is in Joules/kg.deg K, then the flow of heat will be in Joules. My point, dQ takes its units from C for the most part as there is, unfortunately, a number of ways to denote heat energy.