[ suhm-eyt ]
/ ˈsʌm eɪt /
verb (used with object), sum·mat·ed, sum·mat·ing.
to add together; total; sum up.
Origin of summate
First recorded in 1895–1900; back formation from summation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for summate
They accumulate in time, finally they summate, and exercise their influence even at the beginning of the service.Criminal Psychology|Hans Gross