es·ti·ma·tion 
(ĕs′tə-māshən)
(ĕs′tə-māshən)n.
1.
a. The act or an instance of estimating: Estimation of the storm damage took weeks.
b. The amount, extent, position, size, or value reached in an estimate: the cost estimation is $500.
2. An opinion or judgment: In my estimation, that is a good book.
3. Favorable regard; esteem: held her teacher in high estimation.