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 There are 4 twelve-letter words containing 2H, 2N, 2O and S| HARMONIPHONS | • harmoniphons n. Plural of harmoniphon. • HARMONIPHON n. a keyboard wind instrument with reeds, also HARMONIPHONE.
 |  | MONOPHTHONGS | • monophthongs n. Plural of monophthong. • MONOPHTHONG n. two written vowels representing a single sound, e.g. 'oo', 'oa'.
 |  | NONPHOSPHATE | • nonphosphate n. (Chemistry) A substance that is not a phosphate. • NONPHOSPHATE adj. not phosphate.
 |  | RHINOPHONIAS | • RHINOPHONIA n. a nasal tone to the voice which is caused by a defect in the nasal passages. | 
 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.
 
 See this list for:English Wiktionary: 19 wordsScrabble in French: 2 wordsScrabble in Spanish: 1 wordScrabble in Italian: 1 wordScrabble in German: no wordScrabble in Romanian: no word
 
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