approximating
ap-prox-i-mat-ing
noun (gerund)
The process of calculating or estimating something to be nearly correct.
"Approximating the cost was the first step."
verb (present participle)
Coming very close to a particular quantity, quality, or state.
"The model is approximating real-world conditions well."
Thesaurus
Synonyms: approximative, inexact, rough, approximate, guess, judge, gauge, estimate, come close, near, close, close together