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 There are 3 twelve-letter words beginning with SIP| SIPHONOPHORE | • siphonophore n. (Zoology) Any of various transparent marine hydrozoans, of the order Siphonophorae, that float or swim… • SIPHONOPHORE n. a marine creature, colonial in habit.
 |  | SIPHONOSTELE | • siphonostele n. (Botany) A type of stele in which the vascular tissue in the stem forms a cylinder surrounding a central… • SIPHONOSTELE n. the cylinder of conducting tissue surrounding a central core of pith in certain stems.
 |  | SIPUNCULOIDS | • sipunculoids n. Plural of sipunculoid. • SIPUNCULOID n. a kind of marine worm with a retractile proboscis, also SIPUNCULID.
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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: 12 wordsScrabble in French: 13 wordsScrabble in Spanish: 1 wordScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: 3 words
 
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