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 List of 10-letter words containing ••••••Click to add an eighth letter
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 There are 4 ten-letter words containing 2A, 2I, O and 2R| FORMICARIA | • formicaria n. Plural of formicarium. • FORMICARIUM n. an anthill, an ant colony, also FORMICARY. |  | IRRADIATOR | • irradiator n. A device used to irradiate. • IRRADIATOR n. something or someone that irradiates. |  | IRRATIONAL | • irrational adj. Not rational; unfounded or nonsensical. • irrational adj. (Mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as… • irrational n. A real number that can not be expressed as the quotient of two integers, an irrational number. |  | RADIOLARIA | • radiolaria n. The members of the taxonomic subclass Radiolaria; radiolarians. • Radiolaria prop.n. A taxonomic subclass within the class Actinopodea – the radiolaria, numerous species, most of them extinct… • Radiolaria prop.n. Radiozoa. |  
 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. 
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