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 There are 6 thirteen-letter words containing A, I, K, N, 2O and R| ARRHENOTOKIES | • ARRHENOTOKY n. giving birth only to boys. |  | MACROPINAKOID | • MACROPINAKOID n. a crystalline pinacoid which runs parallel to the longer horizontal axis, also MACROPINACOID. |  | MICROPLANKTON | • microplankton n. Microscopic zooplankton. • MICROPLANKTON n. very small plankton.
 |  | ORTHOPINAKOID | • ORTHOPINAKOID n. in monoclinic crystals, a form consisting of two faces parallel to the orthodiagonal and the vertical axis. |  | SCRAPBOOKINGS | • SCRAPBOOKING n. the practice of keeping cuttings. |  | THROMBOKINASE | • thrombokinase n. (Biochemistry) A proteolytic enzyme that converts prothrombin into thrombin during the clotting of blood. • THROMBOKINASE n. an enzyme active in the clotting of blood, aka thromboplastin.
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 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: 111 wordsScrabble in French: 10 wordsScrabble in Spanish: no wordScrabble in Italian: 4 wordsScrabble in German: no wordScrabble in Romanian: 3 words
 
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