What term describes the process of finding the exact size of something?

The process of finding the exact size of something is termed "measure." Measuring involves using specific tools or methods to obtain precise dimensions, quantities, or values. This process is fundamental in scientific experiments, engineering, and various technical fields, where accuracy is crucial.

Measuring allows for the collection of objective data, enabling comparison and replication of results. For instance, when measuring length, it could involve a ruler or a measuring tape, providing an exact numeric value that represents the size being assessed.

In contrast, other terms listed involve different concepts. To assess generally means to evaluate or appraise the quality, importance, or value of something, which does not necessarily provide a precise size. Calculating often refers to determining a quantity or value through mathematical processes, which may not involve direct measurement. Estimating, meanwhile, entails an educated guess or approximation rather than a definitive measurement, which inherently lacks the precision that measuring offers.