a conclusion or resolution reached after consideration:

«…に関する/…する/…という/…かどうかの» 決定, 決意, 決心; 結論, 決着, 解決 «about, on/to do/that節/wh節･句»

e.g. I'll make the decision on my own

e.g. the editor's decision is final.

the action or process of deciding something or of resolving a question:

決定すること

e.g. the information was used as the basis for decision.

a formal judgment:

(裁判所の)評決, 判決

e.g. last year's Supreme Court decision.

the ability or tendency to make decisions quickly; decisiveness:

決断力, 決定能力(↔ indecision)

e.g. she was a woman of decision.

Boxing the awarding of a fight, in the absence of a knockout or technical knockout, to the boxer with the most rounds won or with the most points.

〘ボクシング〙 判定

Baseball a win or a loss assigned to a pitcher.

late Middle English: from Latin decisio(n-), from decidere ‘determine’ (see decide).