1640s, "a fact given or granted," classical plural of datum, from Latin datum "(thing) given," neuter past participle of dare "to give" (from PIE root *do- "to give"). In classical use originally "a fact given as the basis for calculation in mathematical problems." From 1897 as "numerical facts collected for future reference."
Meaning "transmittable and storable information by which computer operations are performed" is first recorded 1946. Data-processing is from 1954; data-base (also database) "structured collection of data in a computer" is by 1962; data-entry is by 1970.
*dō-, Proto-Indo-European root meaning "to give."
It forms all or part of: add; anecdote; antidote; betray; condone; dacha; dado; data; date (n.1) "time;" dative; deodand; die (n.); donation; donative; donor; Dorian; Dorothy; dose; dowager; dower; dowry; edition; endow; Eudora; fedora; Isidore; mandate; Pandora; pardon; perdition; Polydorus; render; rent (n.1) "payment for use of property;" sacerdotal; samizdat; surrender; Theodore; Theodosia; tradition; traitor; treason; vend.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit dadati "gives," danam "offering, present;" Old Persian dadatuv "let him give;" Greek didomi, didonai, "to give, offer," dōron "gift;" Latin dare "to give, grant, offer," donum "gift;" Armenian tam "to give;" Old Church Slavonic dati "give," dani "tribute;" Lithuanian duoti "to give," duonis "gift;" Old Irish dan "gift, endowment, talent," Welsh dawn "gift."
1590s, "act of resupplying, refreshment," from refresh (v.). Modern computer sense of "an act or the process of renewing data or display" is by 1967.
