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 There are 5 twelve-letter words containing G, I, L, 4O and T| GNOTOBIOLOGY | • gnotobiology n. (Biology) The study of animals in a microbe-free environment. • GNOTOBIOLOGY n. the study of life in germfree conditions.
 |  | HOMOLOGATION | • homologation n. (Organic chemistry) Any reaction that converts a compound into the next member of a homologous series… • homologation n. (Law) Official certification.
 • HOMOLOGATION n. confirmation, agreement.
 |  | ODONTOLOGIES | • ODONTOLOGY n. the study of teeth. |  | ODONTOLOGIST | • odontologist n. One who studies teeth. • ODONTOLOGIST n. a student of odontology.
 |  | PHOTOBIOLOGY | • photobiology n. The study of the effects of light on living organisms, and on biological processes. • PHOTOBIOLOGY n. the study of the effects of light on organisms.
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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 WikWik.org and 1Word.ws.
 
 See this list for:English Wiktionary: 15 wordsScrabble in French: 2 wordsScrabble in Spanish: 15 wordsScrabble in Italian: 25 wordsScrabble in German: no wordScrabble in Romanian: 26 words
 
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