First recorded in 1350–1400.
Comes via Middle English from the Latin word tortuōsus, which derives from the verb torquēre, “to twist, bend.”
Sign up for more Word of the Day!

\r\nEXAMPLES OF TORTUOUS\r\n

The tortuous road through the mountains made for a challenging but scenic drive.
The author's writing style was known for its elegant prose and tortuous plot twists.

\r\nIt's National Poetry Month, and we’ve created a challenge that really is for everyone. Submit now!","audio":"https://static.sfdict.com/audio/T03/T0390200.mp3","definitions":[{"partofspeech":"adjective","data":"full of twists, turns, or bends; twisting, winding, or crooked."}],"examples":[],"imageUrl":"https://www.dictionary.com/e/wp-content/uploads/2024/03/tortuous_IG.png","accentColor":"#0063D7"}},"status":"succeeded"}},"meta":{"requestId":"xf2LHDNVo1kqUz1XxUWe5","requestStatus":"fulfilled"}},{"type":"fetchWordsNearby/fulfilled","payload":{"data":{"before":[{"slug":"b-s-l-arch","entry":"B.S.L.Arch."},{"slug":"b-s-l-m","entry":"B.S.L.M."},{"slug":"b-s-l-s","entry":"B.S.L.S."},{"slug":"b-s-m","entry":"B.S.M."},{"slug":"b-s-m-e","entry":"B.S.M.E."}],"after":[{"slug":"b-s-met","entry":"B.S.Met."},{"slug":"b-s-met-e","entry":"B.S.Met.E."},{"slug":"bsmt","entry":"Bsmt"},{"slug":"b-s-n","entry":"B.S.N."},{"slug":"b-s-n-a","entry":"B.S.N.A."}]}},"meta":{"arg":{"word":"b-s-meson"},"requestId":"554oWgGUGHP_HYkxKswU3","requestStatus":"fulfilled"}},{"type":"luna/fetchExampleSentences/fulfilled","payload":{"data":{"tdb":[],"gbg":[]}},"meta":{"arg":{"word":"b-s-meson"},"requestId":"0La_e_NFCN_kBhXQ50fJs","requestStatus":"fulfilled"}},{"type":"fetchDictionaryResults/fulfilled","payload":{"slugs":[{"entries":[{"__typename":"Entry","audioPronunciations":[],"confusableNotes":[],"genderNotes":[],"grammarNotes":[],"headword":{"displayForm":"B-s meson","slug":"b-s-meson"},"idioms":[],"orderKey":99999010,"ordinal":10,"origin":null,"partOfSpeechBlock":[{"definitions":[{"antonymsConnection":{"edges":[]},"definitionSetChunks":"[{\"type\": \"def\", \"children\": [{\"text\": \"a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10\", \"type\": \"text\"}, {\"text\": \"-12\", \"type\": \"text\"}, {\"text\": \"seconds.\", \"type\": \"text\"}]}]","examples":[],"ordinal":1,"subdefinitions":[],"synonymsConnection":{"edges":[]}}],"inflectionSets":[],"labelSet":{"labelSetText":"Physics."},"ordinal":1,"partOfSpeech":"noun"}],"pronunciationNotes":[],"pronunciationSet":null,"relatedFormSets":[],"sensitiveNotes":[],"spellingNotes":[],"synonymStudy":[],"usageAlerts":[],"usageNotes":[],"variants":[],"verbPhrases":[]}],"url":"b-s-meson"}]},"meta":{"arg":{"slug":"b-s-meson"},"requestId":"P1is0l2ipK0kqqOKMWyYY","requestStatus":"fulfilled"}},{"type":"fetchResultsData/fulfilled","payload":{"data":{"url":"b-s-meson","displayForm":"B-s meson","canonicalSlug":"b-s-meson","content":[{"source":"luna","entries":[{"id":"u3bb48a285cbafaf0.-3bc55cee.14d9e5ea03a.a4b","type":"normal","entry":"B-s meson","entrySyllabified":"B-s meson","entryVariants":[],"homograph":null,"pronunciation":null,"predefinitionContent":"","posBlocks":[{"definitions":[{"order":1,"type":"simple","predefinitionContent":"","postdefinitionContent":"","definition":"a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10-12 seconds.","synonyms":"","antonyms":"","cites":[]}],"pos":"noun","posSupplementaryInfo":"Physics."}],"origin":null,"originData":null,"supplementaryNotes":[],"variantForms":["Also called B-s particle. "],"variantSpellings":[],"referenceData":[],"relatedForms":[],"confusables":[]}]}],"nearbyWordOrdinal":21871,"index-rank-01":["b-s meson"],"index-rank-02":[],"index-rank-03":["b-s particle"],"index-rank-04":["b-s meson's","b-s mesons","b-s mesons'"],"index-rank-05":["b-s particle's","b-s particles","b-s particles'"],"index-rank-06":["b s meson","bs meson"],"index-rank-07":[],"index-rank-08":[],"index-rank-09":[],"index-rank-10":[],"index-rank-11":["b s particle","bs particle"],"index-rank-12":[],"index-rank-13":[],"index-rank-14":[],"index-rank-15":[],"complexityScore":0.37703115167347817,"gradeLevel":"middle_school","tunaSlug":null,"isFeaturedMetaSlug":false}},"meta":{"arg":{"word":"b-s-meson"},"requestId":"tt35TrZBJlhxYXz7baXUV","requestStatus":"fulfilled"}},{"type":"fetchSpellSuggestions/fulfilled","payload":{"data":{"luna":[],"tuna":["mason","mesne","melon","messing","muse on","mean","men","son","mesa","mess","moon","most on"],"lunaWithSlug":[],"tunaWithSlug":[{"displayForm":"mason","slug":"mason"},{"displayForm":"mesne","slug":"mesne"},{"displayForm":"melon","slug":"melon"},{"displayForm":"messing","slug":"messing"},{"displayForm":"muse on","slug":"muse%20on"},{"displayForm":"mean","slug":"mean"},{"displayForm":"men","slug":"men"},{"displayForm":"son","slug":"son"},{"displayForm":"mesa","slug":"mesa"},{"displayForm":"mess","slug":"mess"},{"displayForm":"moon","slug":"moon"},{"displayForm":"most on","slug":"most%20on"}]}},"meta":{"arg":{"word":"b-s-meson"},"requestId":"524-_pQiKpwg-5kn_FA5j","requestStatus":"fulfilled"}}]},"actionData":null,"errors":null}

B-s meson

noun

Word of the Day