The Collaborative International Dictionary
sudden death overtime
Overtime \O"ver*time`\, n.
Time beyond, or in excess of, a limit; esp., extra working time.
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(Sports) An extra period of time provided to play a game, beyond the end of the normal period allowed for the game, for the purpose of resolving a tie score; as, the team won in overtime.
sudden death overtime an overtime[2] in which the first team to score wins the game; -- contrasted with normal overtime[2], which is a fixed period of time during which either team may score as often as they can.