I. -ˌmād.ə(r), -ātə- noun
( -s )
Etymology: Medieval Latin, from Latin aestimator, from aestimatus + -or
: one that estimates:
a. : one who estimates the amount of material or labor needed to do a given job or the cost of a job or of an item of manufacture
b. : cruiser 4a
II. noun
: estimate herein ; also : a statistical function whose value for a sample furnishes an estimate of a population parameter