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 There are 9 fifteen-letter words containing OSYN| IDIOSYNCRATICAL | • idiosyncratical adj. Alternative form of idiosyncratic. • IDIOSYNCRATICAL adj. showing idiosyncrasy, also IDIOSYNCRATIC. |  | NUCLEOSYNTHESES | • nucleosyntheses n. Plural of nucleosynthesis. • NUCLEOSYNTHESIS n. the production of a chemical element from simpler nuclei, as of hydrogen, esp. in a star. |  | NUCLEOSYNTHESIS | • nucleosynthesis n. (Physics, astronomy) Any of several processes that lead to the synthesis of heavier atomic nuclei. • NUCLEOSYNTHESIS n. the production of a chemical element from simpler nuclei, as of hydrogen, esp. in a star. |  | NUCLEOSYNTHETIC | • nucleosynthetic adj. Of or pertaining to nucleosynthesis. • NUCLEOSYNTHETIC adj. relating to nucleosynthesis. |  | PHOTOSYNTHESISE | • photosynthesise v. Alternative spelling of photosynthesize. • PHOTOSYNTHESISE v. to carry out photosynthesis. |  | PHOTOSYNTHESIZE | • photosynthesize v. To synthesize carbohydrates from carbon dioxide and water using the energy of light by photosynthesis. • PHOTOSYNTHESIZE v. to carry out photosynthesis, also PHOTOSYNTHESISE. |  | PSYCHOSYNTHESES | • psychosyntheses n. Plural of psychosynthesis. • PSYCHOSYNTHESIS n. a form of psychotherapy combining psychoanalytic techniques with meditation and exercise. |  | PSYCHOSYNTHESIS | • psychosynthesis n. A form of psychology based on the direct experience of the self. • PSYCHOSYNTHESIS n. a form of psychotherapy combining psychoanalytic techniques with meditation and exercise. |  | TENOSYNOVITISES | • TENOSYNOVITIS n. inflammation of a tendon sheath. |  
 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: 42 words
 - Scrabble in French: 7 words
 - Scrabble in Spanish: no word
 - Scrabble in Italian: no word
 - Scrabble in German: no word
 - Scrabble in Romanian: no word
 
 
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