Recomputation | Definition of Recomputation by Merriam-Webster.

Is there a word recomputation?

The act, process or result of recomputing; recalculation.

Is there such a word as recalculate?

verb (used with object), re·cal·cu·lat·ed, re·cal·cu·lat·ing. to calculate again, especially for the purpose of finding an error or confirming a previous computation.