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":"3bFsLwi5CQBINJHyHcECj","requestStatus":"fulfilled"}},{"type":"fetchWordsNearby/fulfilled","payload":{"data":{"before":[{"slug":"deindividuation","entry":"deindividuation"},{"slug":"deindustrialization","entry":"deindustrialization"},{"slug":"deindustrialize","entry":"deindustrialize"},{"slug":"deinonychus","entry":"deinonychus"},{"slug":"deinstitutionalize","entry":"deinstitutionalize"}],"after":[{"slug":"deionize","entry":"deionize"},{"slug":"deipnosophist","entry":"deipnosophist"},{"slug":"deira","entry":"Deira"},{"slug":"deirdre","entry":"Deirdre"},{"slug":"deism","entry":"deism"}]}},"meta":{"arg":{"word":"deionization"},"requestId":"XgX2q3tO70eqI0qGjnddf","requestStatus":"fulfilled"}},{"type":"luna/fetchExampleSentences/fulfilled","payload":{"data":{"tdb":[],"gbg":[]}},"meta":{"arg":{"word":"deionization"},"requestId":"RDhavUXx_61rmdYFaCzyS","requestStatus":"fulfilled"}},{"type":"fetchDictionaryResults/fulfilled","payload":{"slugs":[{"entries":[{"__typename":"ScienceEntry","headword":{"displayForm":"deionization","slug":"deionization"},"note":null,"partOfSpeechGroups":[{"definitions":[{"definitionSetChunks":"[{\"type\": \"text\", \"text\": \"The removal of ions from a solution using an ion exchange process. Deionization is used for water purification and for medical purposes.\"}]","label":null,"ordinal":1,"subdefinitions":[]}],"ordinal":1,"inflections":[],"partOfSpeech":""}],"pronunciation":{"text":"dē-ī′ə-nĭ-zā′shən"}}],"url":"deionization"}]},"meta":{"arg":{"slug":"deionization"},"requestId":"aQN2rBLPOzT1T5mrR-8-e","requestStatus":"fulfilled"}},{"type":"fetchResultsData/fulfilled","payload":{"data":{"url":"deionization","displayForm":"deionization","canonicalSlug":"deionization","content":[{"source":"science","entries":[{"id":"D0008100","type":"V","entry":"deionization","homograph":null,"pronunciation":{"audio":{"audio/ogg":"https://static.sfdict.com/content-assets/science/audio/ogg/DA008100.ogg","audio/mpeg":"https://static.sfdict.com/content-assets/science/audio/mp3/DA008100.mp3","audio/wav":"https://static.sfdict.com/content-assets/science/audio/wav/DA008100.wav"},"spell":"dē-ī′ə-nĭ-zā′shən"},"predefinitionContent":"","posBlocks":[{"pos":"","pronunciation":"","posSupplementaryInfo":"","definitionSets":[{"id":null,"predefinitionContent":"","definition":"The removal of ions from a solution using an ion exchange process. Deionization is used for water purification and for medical purposes.","postdefinitionContent":"","subdefinitions":[],"dsSupplementaryInfo":[]}]}],"relatedForms":[],"supplementaryNotes":[],"media":[]}]}],"nearbyWordOrdinal":41483,"index-rank-01":["deionization"],"index-rank-02":[],"index-rank-03":[],"index-rank-04":[],"index-rank-05":[],"index-rank-06":[],"index-rank-07":[],"index-rank-08":[],"index-rank-09":[],"index-rank-10":[],"index-rank-11":[],"index-rank-12":[],"index-rank-13":[],"index-rank-14":[],"index-rank-15":[],"tunaSlug":null,"isFeaturedMetaSlug":false}},"meta":{"arg":{"word":"deionization"},"requestId":"8bQoExPnXyRdXJtf9Xfyc","requestStatus":"fulfilled"}},{"type":"fetchSpellSuggestions/fulfilled","payload":{"data":{"luna":[],"tuna":["lionization","donation","denotation","denudation","de notation","de-notation","dentation","deposition","modernization","dentition","de position","de-position","darnation"],"lunaWithSlug":[],"tunaWithSlug":[{"displayForm":"lionization","slug":"lionization"},{"displayForm":"donation","slug":"donation"},{"displayForm":"denotation","slug":"denotation"},{"displayForm":"denudation","slug":"denudation"},{"displayForm":"de notation","slug":"de%20notation"},{"displayForm":"de-notation","slug":"de-notation"},{"displayForm":"dentation","slug":"dentation"},{"displayForm":"deposition","slug":"deposition"},{"displayForm":"modernization","slug":"modernization"},{"displayForm":"dentition","slug":"dentition"},{"displayForm":"de position","slug":"de%20position"},{"displayForm":"de-position","slug":"de-position"},{"displayForm":"darnation","slug":"darnation"}]}},"meta":{"arg":{"word":"deionization"},"requestId":"WALDe8wsKtlwH0WeVaARl","requestStatus":"fulfilled"}}]},"actionData":null,"errors":null}

deionization

Word of the Day