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 There are 4 fifteen-letter words containing A, I, 2M, N, 2R and U| INTERAMBULACRUM | • interambulacrum n. (Zoology) In echinoderms, one of the areas or zones intervening between two ambulacra. • INTERAMBULACRUM n. in sea urchins, a radial band between ambulacra. |  | MACROSPORANGIUM | • macrosporangium n. (Botany) A megasporangium; sporangium or conceptacle containing only large spores; opposed to microsporangium. • MACROSPORANGIUM n. a sporangium producing only megaspores. |  | MICROSPORANGIUM | • microsporangium n. (Botany) A case, capsule or container that holds microspores. • MICROSPORANGIUM n. the sporangium in heterosporous plants where the microspores develop. |  | ULTRAMODERNISMS | • ultramodernisms n. Plural of ultramodernism. • ULTRAMODERNISM n. an artistic movement beyond modernism. |  
 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: 48 words
 - Scrabble in French: 8 words
 - Scrabble in Spanish: 26 words
 - Scrabble in Italian: 27 words
 - Scrabble in German: no word
 - Scrabble in Romanian: 14 words
 
 
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