理論的な定義と意味 - メリアム・ウェブスター

THEORETICAL 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 More from M-W Show more Show more Citation Kids More from M-W Save Word To save this word, you'll need to log in. Log In theoretical adjective the·​o·​ret·​i·​cal ˌthē-ə-ˈre-ti-kəl ˌthir-ˈe-ti-kəl variants or less commonly theoretic ˌthē-ə-ˈre-tik ˌthir-ˈe-tik Synonyms of theoretical Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 : existing only in theory : hypothetical gave as an example a theoretical situation 2 a : relating to or having the character of theory : abstract b : confined to theory or speculation often in contrast to practical applications : speculative theoretical physics 3 : given to or skilled in theorizing a brilliant theoretical physicist Synonyms of theoretical Relevance hypothetical speculative conjectural See All Synonyms & Antonyms in Thesaurus Examples of theoretical in a Sentence On a theoretical level, hiring more people seems logical. The idea is purely theoretical at this point. The danger is more than just a theoretical possibility. 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 . This time, the restraint feels less theoretical . — The Ai Insider, Interesting Engineering , 27 Apr. 2026 Because for many communities, environmental justice isn't theoretical . — Zachary Bynum, CBS News , 26 Apr. 2026 Here’s a question — theoretical , of course — for Meatball Morrissey. — Howie Carr, Boston Herald , 26 Apr. 2026 On my pediatric hospital ward, those concerns are not theoretical . — Sarah Marsicek, The Orlando Sentinel , 26 Apr. 2026 See All Example Sentences for theoretical Word History Etymology Late Latin theoreticus , from Greek theōrētikos , from theōrein to look at First Known Use 15th century, in the meaning defined at sense 1 Time Traveler The first known use of theoretical was in the 15th century See more words from the same century Phrases Containing theoretical anti - theoretical in theoretical terms Rhymes for theoretical aesthetical genetical heretical magnetical poetical prophetical alphabetical antithetical arithmetical catechetical exegetical homiletical See All Rhymes for theoretical Browse Nearby Words theorem of Pythagoras theoretical theoretically See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Theoretical.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/theoretical. Accessed 3 May. 2026. Copy Citation Kids Definition theoretical adjective the·​o·​ret·​i·​cal ˌthē-ə-ˈret-i-kəl ˌthi(-ə)r-ˈet- variants also theoretic -ik 1 a : relating to or having the character of theory : abstract b : limited to theory or speculation : speculative theoretical physics 2 : existing only in theory : hypothetical a theoretical situation theoretically -i-k(ə-)lē adverb More from Merriam-Webster on theoretical Nglish: Translation of theoretical for Spanish Speakers Last Updated: 28 Apr 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 métier See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words 5 Verbal Slip Ups and Language Mistakes Is that lie 'bald-faced' or 'bold-faced'? The Difference Between 'i.e.' and 'e.g.' Why is '-ed' sometimes pronounced at the end of a word? See More Popular in Wordplay See More The Longest Long Words List 9 Other Words for Beautiful The Words of the Week - May 1 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 9 Other Words for Beautiful See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! Play The Missing Letter A daily crossword with a twist Play Name That Tree! A quiz that’s all bark, no bite. Take the quiz See All