estimation

estimation

CEFR: B1-B2 /es-ti-ma-tion/ [eh2.s.t.ah0.m.ey1.sh.ah0.n]

The noun estimation can mean opinion. Look at the following examples:

Example Sentences:
My estimation of his films was never very high. [= I never thought his films were very good]
This is not, in my estimation, an efficient use of our resources.

Another definition of estimation is an approximate calculation of something's value, size, amount ..etc. For example:

Example Sentences:
If you go to an auction, you can often review a catalog that will have an estimation of the value of each item for sale. Sometimes the items sell for more than the estimation and sometimes less.
You may ask a contractor for an estimation before you decide to build a deck on the back of your house.
The analysis of ancient DNA in bones and teeth is now the most widely used method for age estimation in the field of archaeology.