削減の定義と意味 - メリアム・ウェブスター

REDUCTION Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Synonyms Example Sentences Word History Phrases Containing Rhymes Entries Near Cite this Entry Citation Kids Definition Kids Medical Definition Medical More from M-W Show more Show more Citation Kids Medical More from M-W Save Word To save this word, you'll need to log in. Log In reduction noun re·​duc·​tion ri-ˈdək-shən plural reductions Synonyms of reduction Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 : the act or process of reducing : the state of being reduced 2 a : something made by reducing b : the amount by which something is reduced 3 [Spanish reducción , from Latin reduction-, reductio ] : a South American Indigenous settlement directed by Jesuit missionaries 4 : meiosis sense 2 specifically : production of the gametic chromosome number in the first meiotic division reductional ri-ˈdək-sh(ə-)nəl adjective Synonyms of reduction Relevance deduction discount See All Synonyms & Antonyms in Thesaurus Examples of reduction in a Sentence a drastic reduction in size Many voters want to see some reduction of the deficit. There is a 20 percent reduction on selected items during this sale. 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 . Starting in January, the monthly premiums for the health plan used by many teachers rose from zero to $1,400 a month paid over 10 months each year — an enormous reduction in take-home pay. — Howard Blume, Los Angeles Times , 30 Apr. 2026 Through the reductions of roles and other measures, like school closures and a hiring freeze, the district’s aim is to save $75 million in net cost. — Natalie La Roche Pietri, Miami Herald , 30 Apr. 2026 Broadly speaking, studies have found that excessive screen time of certain types may have some negative effects on kids, including an increase in anxiety and depression, a reduction in attention span and the ability to manage emotions, lower academic achievements and cognitive issues. — Allison Parshall, Scientific American , 30 Apr. 2026 There is a path for the network to order both for next season with some surgical order reductions on some returning drama series to free up budget for the extra show. — Nellie Andreeva, Deadline , 30 Apr. 2026 See All Example Sentences for reduction Word History Etymology Middle English reduccion restoration, from Middle French reducion , from Late Latin & Latin; Late Latin reduction-, reductio reduction (in a syllogism), from Latin, restoration, from reducere First Known Use 15th century, in the meaning defined at sense 1 Time Traveler The first known use of reduction was in the 15th century See more words from the same century Phrases Containing reduction oxidation - reduction reduction division reduction gear Rhymes for reduction abduction adduction conduction construction deduction destruction eduction induction instruction obstruction production seduction See All Rhymes for reduction Browse Nearby Words reductio ad absurdum reduction reductional See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Reduction.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/reduction. Accessed 6 May. 2026. Copy Citation Kids Definition reduction noun re·​duc·​tion ri-ˈdək-shən 1 : the act or process of reducing : the state of being reduced 2 a : something made by reducing b : the amount by which something is reduced in price 3 : meiosis especially : halving of the chromosome number in the reduction division reductive -ˈdək-tiv adjective Medical Definition reduction noun re·​duc·​tion ri-ˈdək-shən 1 : the replacement or realignment of a body part in normal position or restoration of a bodily condition to normal 2 : the process of reducing by chemical or electrochemical means 3 : the psychological diminishment of emotion or needs through activity or adjustment 4 : meiosis specifically : production of the gametic chromosome number in the first meiotic division More from Merriam-Webster on reduction Nglish: Translation of reduction for Spanish Speakers Britannica.com: Encyclopedia article about reduction Last Updated: 1 May 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day flamboyant See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words Regarding the Incorrect Use of 'Decimate' 5 Verbal Slip Ups and Language Mistakes Is that lie 'bald-faced' or 'bold-faced'? The Difference Between 'i.e.' and 'e.g.' See More Popular in Wordplay See More The Longest Long Words List Where does 'curiosity killed the cat' come from? 9 Other Words for Beautiful Was 'nervous Nellie' a real person? 12 Lovely and Unusual Words for the Natural World See More Popular See More More Commonly Mispronounced Words The Longest Long Words List Where does 'curiosity killed the cat' come from? See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! 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