c. 1300, "harm, injury; hurt or loss to person, character, or estate," from Old French damage, domage "loss caused by injury" (12c., Modern French dommage), from dam "damage," from Latin damnum "loss, hurt, damage" (see damn). In law (as damages) "the value in money of what was lost or withheld, that which is given to repair a cost," from c. 1400. Colloquial sense of "cost, expense" is by 1755. Damage control "action taken to limit the effect of an accident or error" is attested by 1933 in U.S. Navy jargon.
mid-15c., indempnite, "security or exemption against damage, loss, etc.," from Old French indemnité (14c.), from Late Latin indemnitatem (nominative indemnitas) "security for damage," from Latin indemnis "unhurt, undamaged," from in- "not, opposite of, without" (see in- (1)) + damnum "damage" (see damn). Meaning "legal exemption" is from 1640s; sense of "compensation for loss" is from 1793. Related: Indemnitor; indemnitee.
acronym from Advanced Research Projects Agency Network, set up in 1969 by a branch of the U.S. Department of Defense in partnership with four universities; acknowledged as "the world's first operational packet switching network" and predecessor of the internet.
1732, "action of compensating for loss or damage," noun of action from indemnify.