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 List of 13-letter words containing Click to add a fifth letter
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 There are 6 thirteen-letter words containing IOSP| AECIDIOSPORES | • AECIDIOSPORE n. a spore produced in an aecidium. |  | ANGIOSPERMOUS | • angiospermous adj. (Botany) Having seeds enclosed in a pod or other pericarp. • ANGIOSPERMOUS adj. like an angiosperm, also ANGIOSPERMAL. |  | BASIDIOSPORES | • basidiospores n. Plural of basidiospore. • BASIDIOSPORE n. a spore produced by a basidium. |  | CONIDIOSPORES | • conidiospores n. Plural of conidiospore. • CONIDIOSPORE n. a conidium. |  | PYCNIDIOSPORE | • pycnidiospore n. A spore from a pycnidium. • PYCNIDIOSPORE n. a conidium produced in a pycnidium, also PYCNOSPORE. |  | UREDINIOSPORE | • urediniospore n. (Botany) A spore produced by a uredinium. • UREDINIOSPORE n. the thin-walled summer spore which is produced during the so-called Uredo stage of certain rusts, also UREDIOSPORE, UREDOSPORE. |  
 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: 20 words
 - Scrabble in French: 1 word
 - Scrabble in Spanish: no word
 - Scrabble in Italian: 2 words
 - Scrabble in German: no word
 - Scrabble in Romanian: 10 words
 
 
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