aggregate (v.) Look up aggregate at Dictionary.com
c. 1400, "bring together in a sum or mass," from Latin aggregatus, past participle of aggregare "attach, join, include; collect, bring together," literally "bring together in a flock," from ad- "to" (see ad-) + gregare "to collect into a flock, gather," from grex (genitive gregis) "a flock" (see gregarious). Intransitive meaning "Come together in a sum or mass" is from 1855. Related: Aggregated; aggregating.
aggregate (adj.) Look up aggregate at Dictionary.com
c. 1400, from Latin aggregatus "associated, united," past participle of aggregare "add to (a flock), lead to a flock, bring together (in a flock)," figuratively "attach, join, include; collect, bring together," from ad- "to" (see ad-) + gregare "to collect into a flock, gather," from grex (genitive gregis) "a flock," from PIE root *ger- (1) "to gather together, assemble" (see gregarious).
aggregate (n.) Look up aggregate at Dictionary.com
"number of persons, things, etc., regarded as a unit," early 15c., from Latin noun use of adjective aggregatum, neuter of aggregatus "associated, united," literally "united in a flock" (see aggregate (adj.)).