決定の定義と意味 - メリアム・ウェブスター

DECISION Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition noun verb noun 2 noun verb Synonyms Example Sentences Word History Phrases Containing Rhymes Entries Near Cite this Entry Citation Kids Definition Kids Legal Definition Legal More from M-W Show more Show more Citation Kids Legal More from M-W Save Word To save this word, you'll need to log in. Log In decision 1 of 2 noun de·​ci·​sion di-ˈsi-zhən Synonyms of decision Take our 3 question quiz on decision Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 a : the act or process of deciding the moment of decision has come b : a determination arrived at after consideration : conclusion made the decision to attend graduate school c : a judicial determination made after consideration of the facts or law of a case a Supreme Court decision Take our 3 question quiz on decision 2 : a written report of a determination or conclusion a 5-page decision read the court's decision 3 : promptness and firmness in deciding : determination acting with decision 4 a : win specifically , combat sports : a victory based on points awarded Former heavyweight champion kickboxer Sterling (Cash) McCallum took a unanimous decision over Cesar Rendon in an eight-round standard bout in Phoenix … — New York Times b baseball : a win or loss officially credited to a pitcher has five wins in eight decisions decisional di-ˈsi-zhnəl -ˈsi-zhə-nᵊl adjective Quiz: Which word is closest in meaning to decision ? decision 2 of 2 verb decisioned ; decisioning ; decisions transitive verb combat sports : to win by being awarded more points than (an opponent) … he hasn't won an important fight since he decisioned Duran on Jan. 30, 1982. — William Nack Synonyms of decision Relevance Noun opinion verdict conclusion determination See All Synonyms & Antonyms in Thesaurus Examples of decision in a Sentence Noun She announced her decision to go to medical school. Have you made a decision ? He based his decision on facts, not emotions. She made a conscious decision to leave the painting unfinished. We need someone who will act with decision even under pressure. The U.S. Supreme Court's 1954 decision brought an end to racial segregation in public schools. See More Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . Noun Take a few minutes to reset, then make one decision that supports both your stability and your peace moving forward. — Tarot.com, Hartford Courant , 28 Apr. 2026 States can also make an independent decision not to allow the sale of a product in their state. — Maureen Groppe, USA Today , 28 Apr. 2026 Verb Prior research has shown that cognitive decline in elderly people can affect their situational awareness as well as delay decision their making, while reduced dexterity in these populations can become worse in high-stress situations, such as a plane fire. — Soo Kim, MSNBC Newsweek , 31 Mar. 2026 The vaccine schedule determines what decisions health care providers might be liable for, and which vaccines are covered by federal programs. — Anil Oza, STAT , 16 Mar. 2026 See All Example Sentences for decision Word History Etymology Noun Middle English decisioun, borrowed from Anglo-French decision "judgment" (Middle French also "act of deciding, coming to a definitive conclusion"), borrowed from Latin dēcīsiōn-, dēcīsio "curtailment, diminishment, settlement, agreement," from dēcīdere "to cut off, cut out, mark by cutting, settle, choose as a course of action" + -tiōn-, -tiō, suffix of verbal action — more at decide Verb derivative of decision entry 1 First Known Use Noun 15th century, in the meaning defined at sense 1a Verb 1914, in the meaning defined above Time Traveler The first known use of decision was in the 15th century See more words from the same century Phrases Containing decision decision - maker decision - making decision theory decision tree hand down a decision informed decision overturn the decision split decision split - second decision sub - decision take a decision uphold the decision Rhymes for decision abscission collision derision division elision envision excision incision misprision precision prevision provision See All Rhymes for decision Browse Nearby Words decipherment decision decisional See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Decision.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/decision. Accessed 3 May. 2026. Copy Citation Kids Definition decision noun de·​ci·​sion di-ˈsizh-ən 1 : the act or result of deciding the decision of the court 2 : promptness and firmness in deciding : determination a leader of courage and decision Legal Definition decision noun de·​ci·​sion di-ˈsi-zhən : an authoritative determination (as a decree or judgment) made after consideration of facts or law also : a report or document containing such a determination see also memorandum decision compare disposition , finding , holding , judgment , opinion , ruling , verdict Note: A decision, while being an authoritative determination of a disputed issue, does not have to be a final determination closing the case. Some interlocutory decisions may be appealed. decisional -zhə-nəl adjective More from Merriam-Webster on decision Nglish: Translation of decision for Spanish Speakers Last Updated: 28 Apr 2026 - Updated example sentences Love words? Need even more definitions? 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