1530s, "to make very happy," from French béatifer, from Late Latin beatificare "make happy, make blessed," from Latin beatus "supremely happy, blessed" (past participle of beare "make happy, bless;" see Beatrice) + -ficare, combining form of facere "to make" (from PIE root *dhe- "to set, put"). The Catholic Church sense of "to pronounce as being in heavenly bliss" (1620s) is the first step toward canonization. Related: Beatified; beatifying.
c. 1500, "act of rendering blessed," from French béatification, noun of action and state from past-participle stem of Late Latin beatificare "make happy" (see beatify). As a papal declaration about the status of a deceased person and entitlement of public religious honor, it dates from c. 1600.
Proto-Indo-European root meaning "to do, perform; show favor, revere."
It forms all or part of: beatific; beatify; beatitude; Beatrice; beau; beauty; Bella; belle; beldam; belladonna; belvedere; bene-; benedict; Benedictine; benediction; benefactor; beneficiary; benefice; beneficence; benefit; benevolent; benign; bonanza; bonbon; bonhomie; bonito; bonjour; bonny; bonus; boon (adj.); bounty; debonair; embellish.
It is the hypothetical source of/evidence for its existence is provided by: Latin bene (adv.) "well, in the right way, honorably, properly," bonus "good," bellus "handsome, fine, pretty," and possibly beatus "blessed," beare "to make blessed."