[ 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for summated



1900, Modern Latin summatus, past participle of summare "to sum" (see summation). Related: Summated; summating.

Online Etymology Dictionary, © 2010 Douglas Harper