1 when intr, usually foll by: upon to give a decision (on), esp. a formal or binding one
2 intr to act as an adjudicator
3 tr (Chess) to determine the likely result of (a game) by counting relative value of pieces, positional strength, etc.
4 intr to serve as a judge or arbiter, as in a competition
(C18: from Latin adjudicare to award something to someone, from ad- to + judicare to act as a judge, from judex judge)
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