知識の定義と意味 | ブリタニカ辞典

Knowledge Definition & Meaning | Britannica Dictionary The Britannica Dictionary mobile search Home Ask the Editor Word of the Day Quizzes Core Vocabulary Browse the Dictionary × Britannica Homepage Ask the Editor Word of the Day Quizzes Core Vocabulary Browse the Dictionary The Britannica Dictionary knowledge 3 ENTRIES FOUND: knowledge (noun) best (noun) public (adjective) knowledge / ˈ nɑːlɪʤ/ noun knowledge / ˈ nɑːlɪʤ/ noun Britannica Dictionary definition of KNOWLEDGE 1 : information, understanding, or skill that you get from experience or education [ noncount ] She has little/no/some knowledge of fashion/history/cooking. He has devoted himself to the pursuit of knowledge . a thirst/quest for knowledge [+] more examples [-] hide examples [+] Example sentences [-] Hide examples [ singular ] a knowledge of carpentry She gained/acquired a thorough knowledge of local customs. I have a reading knowledge of French [=I can read French], but I can't speak it fluently. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 2 [ noncount ] : awareness of something : the state of being aware of something He claimed to have no knowledge of the plan. = He denied all/any knowledge of the plan. Did you have any knowledge of her intentions? The decision was made without my knowledge . [=I did not know about the decision] [+] more examples [-] hide examples [+] Example sentences [-] Hide examples common knowledge : something that many or most people know It's common knowledge that she plans to run for mayor. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples public knowledge : something that people know because it has been reported in the news His legal problems are a matter of public knowledge . [+] more examples [-] hide examples [+] Example sentences [-] Hide examples safe/secure in the knowledge : feeling safe or secure because you know something specified They went on vacation, safe in the knowledge that the farm would be well cared for while they were away. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples to someone's knowledge : according to what someone knows — usually used in negative statements “Did anyone arrive late?” “ Not to my knowledge .” No one arrived late to my knowledge . [=I am not aware that anyone arrived late, but it is possible that someone arrived late and I don't know about it] [+] more examples [-] hide examples [+] Example sentences [-] Hide examples to the best of my knowledge — used to say that you think a statement is true but that there may be something you do not know which makes it untrue To the best of my knowledge [= as far as I know ], everyone arrived on time. I answered their questions to the best of my knowledge . [=I gave the best answers I could based on what I knew, but I might have answered differently if I had known something else] [+] more examples [-] hide examples [+] Example sentences [-] Hide examples ASK THE EDITOR Which word should I use after essential , for or to ? See the answer » QUIZZES Vocabulary Quiz Test your word power Take the Quiz » Name That Thing Take our visual quiz Test Your Knowledge » WORD OF THE DAY concrete : a hard, strong material that is used for building and made by mixing cement, sand, and broken rocks with water Learn More » About Us & Legal Info Contact Us Privacy Notice Terms of Use Pronunciation Symbols Help d="M0 12c0 5.123 3.211 9.497 7.73 11.218-.11-.937-.227-2.482.025-3.566.217-.932 1.401-5.938 1.401-5.938s-.357-.715-.357-1.774c0-1.66.962-2.9 2.161-2.9 1.02 0 1.512.765 1.512 1.682 0 1.025-.653 2.557-.99 3.978-.281 1.189.597 2.159 1.769 2.159 2.123 0 3.756-2.239 3.756-5.471 0-2.861-2.056-4.86-4.991-4.86-3.398 0-5.393 2.549-5.393 5.184 0 1.027.395 2.127.889 2.726a.36.36 0 0 1 .083.343c-.091.378-.293 1.189-.332 1.355-.053.218-.173.265-.4.159-1.492-.694-2.424-2.875-2.424-4.627 0-3.769 2.737-7.229 7.892-7.229 4.144 0 7.365 2.953 7.365 6.899 0 4.117-2.595 7.431-6.199 7.431-1.211 0-2.348-.63-2.738-1.373 0 0-.599 2.282-.744 2.84-.282 1.084-1.064 2.456-1.549 3.235C9.584 23.815 10.77 24 12 24c6.627 0 12-5.373 12-12S18.627 0 12 0 0 5.373 0 12"> © 2026 Encyclopædia Britannica, Inc.