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List of 15-letter words containing

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There are 19 fifteen-letter words containing 2H, 2N, O and S

CHANNELOPATHIESchannelopathies n. Plural of channelopathy.
CHONDRICHTHYANSchondrichthyans n. Plural of chondrichthyan.
CHONDRICHTHYAN n. a technical name for a cartilaginous fish.
CHONDROPHORINESCHONDROPHORINE n. a member of the Chondrophora, a suborder of hydrozoans similar to medusae but with a different internal structure.
ETHNOHISTORIANSethnohistorians n. Plural of ethnohistorian.
ETHNOHISTORIAN n. a student of ethnohistory.
HALFPENNYWORTHShalfpennyworths n. Plural of halfpennyworth.
HALFPENNYWORTH n. as much as is sold for a halfpenny or is worth a halfpenny.
HOIDENISHNESSESHOIDENISHNESS n. HOIDENISH, like a hoiden, a woman of saucy, boisterous or carefree behavior, also HOYDENISH.
HOYDENISHNESSESHOYDENISHNESS n. HOYDENISH, like a hoyden, also HOIDENISH.
METHYLTHIONINESMETHYLTHIONINE n. as in methylthionine chloride, a dark green dye used as a stain, antiseptic etc.
MONOPHTHONGISEDmonophthongised v. Simple past tense and past participle of monophthongise.
MONOPHTHONGISE v. to pronounce as a monophthong, also MONOPHTHONGIZE.
MONOPHTHONGISESmonophthongises v. Third-person singular simple present indicative form of monophthongise.
MONOPHTHONGISE v. to pronounce as a monophthong, also MONOPHTHONGIZE.
MONOPHTHONGIZESmonophthongizes v. Third-person singular simple present indicative form of monophthongize.
MONOPHTHONGIZE v. to pronounce as a monophthong, also MONOPHTHONGISE.
NONPHILOSOPHERSnonphilosophers n. Plural of nonphilosopher.
NONPHILOSOPHER n. someone who is not a philosopher.
ODONTORHYNCHOUSODONTORHYNCHOUS adj. of birds, having toothlike ridges inside the beak.
ORNITHORHYNCHUSornithorhynchus n. A platypus (genus Ornithorhynchus).
Ornithorhynchus prop.n. A taxonomic genus within the family Ornithorhynchidae – the single species Ornithorhynchus anatinus…
ORNITHORHYNCHUS n. the duckbill platypus.
PHOTOFINISHINGSPHOTOFINISHING n. the development and printing of photographic film commercially.
PHTHALOCYANINESphthalocyanines n. Plural of phthalocyanine.
PHTHALOCYANINE n. any of a group of green and blue organic colouring matters of great fastness and brilliance, also PHTHALOCYANIN.
RHINENCEPHALONSRHINENCEPHALON n. the olfactory lobe of the brain.
SULPHONMETHANESSULPHONMETHANE n. a colourless crystalline compound used medicinally as a hypnotic, also SULFONMETHANE.
THANKWORTHINESSthankworthiness n. The quality or state of being thankworthy.
THANKWORTHINESS n. the state of being thankworthy.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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