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 List of 13-letter words containing •••••••Click to add a ninth letter
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 There are 5 thirteen-letter words containing A, 2M, N, 2O and 2R| HARMONOMETERS | • harmonometers n. Plural of harmonometer. • HARMONOMETER n. an instrument for measuring the harmonic relations of sounds. |  | MICROORGANISM | • microorganism n. (Microbiology) An organism that is too small to be seen by the unaided eye, especially a single-celled… • microörganism n. An alternative spelling of microorganism with a diaresis to indicate that the two O’s are separately pronounced. • micro-organism n. Alternative spelling of microorganism. |  | MONOCHROMATOR | • monochromator n. (Physics) An optical device, consisting of one or more slits, that selects a narrow band of wavelengths… • MONOCHROMATOR n. a device for isolating a narrow portion of a spectrum. |  | NONPROGRAMMER | • nonprogrammer n. A person who is not a computer programmer. • non-programmer n. Alternative spelling of nonprogrammer. • NONPROGRAMMER n. someone who is not a programmer. |  | NORMOTHERMIAS | • NORMOTHERMIA n. normal body temperature. |  
 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 WikWik.org and 1Word.ws. 
 See this list for:- English Wiktionary: 31 words
 - Scrabble in French: 15 words
 - Scrabble in Spanish: 78 words
 - Scrabble in Italian: 158 words
 - Scrabble in German: no word
 - Scrabble in Romanian: 31 words
 
 
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