summing

verb

1. (form-of, gerund, participle, present)present participle and gerund of sum

noun

1. The act or result of addition; a sum.

   “In this manner each page [of accounts] is summed up, and […] the amount of the last page of all, as comprehending all the particular summings of the preceding pages, is to be considered as the total amount of the whole account.”

pron

1. (alt-of, alternative, colloquial)Alternative form of something.