"characterized by the use of push-buttons," 1945, originally of military systems, earlier "operated by push-buttons" (1903), from push-button (n.) "button pressed with the finger to effect some operation," 1865, from push (v.) + button (n.). Earlier adjective was press-button (1892), from the noun (1879).
Middle English overriden, from Old English oferridan "to ride across, ride through or over," from ofer "over" (see over) + ridan "to ride" (see ride (v.)). Originally literal, of cavalry, etc. Figurative meaning "to set aside arrogantly" is by 1827, from the notion of "to trample down," hence "supersede." The mechanical sense "to suspend automatic operation" is attested from 1946. As a noun in the sense "act or process of suspending automatic operation," from 1946. Related: Overrode; overriding; overridden.
And þanne þeze Frenschmen come prikkyng doun as þei wolde haue ouyr-rydyn alle oure meyne; but God and our archers made hem sone to stomble. [Layamon, from the description of the Battle of Agincourt in "The Brut, or The Chronicles of England"]
"to fill, charge, load" (a weapon, before firing), 1510s, probably from prime (adj.). General sense of "perform the first operation on, prepare (something, especially wood, etc., for painting)" is from c. 1600. To prime a pump (1769) meant to pour water down the tube, which saturated the sucking mechanism and made it draw up water more readily. Related: Primed; priming.
early 15c. (Chauliac), reposicioun, in medicine, "a placing, putting, act of replacing, operation of restoring (something) to its original position," from Late Latin repositionem (nominative repositio) "a laying up, a storing up," noun of action from past-participle stem of Latin reponere (see repose (v.2)). Meaning "act of laying up in safety" is from 1610s; that of "reinstatement" (of a person, to an office, etc.)
is from 1640s.
"accumulation of loose matter or rubbish from some destructive operation or process," 1708, from French débris "remains, waste, rubbish" (16c.), from obsolete debriser "break down, crush," from Old French de- (see de-) + briser "to break," from Late Latin brisare, which is possibly of Gaulish origin (compare Old Irish brissim "I break").