siphonostele

noun
si·pho·no·stele | \sī-ˈfä-nə-ˌstēl, ˌsī-fə-nə-ˈstē-lē\

Definition of siphonostele 

: a stele consisting of vascular tissue surrounding a central core of pith parenchyma

First Known Use of siphonostele

1902, in the meaning defined above

History and Etymology for siphonostele

Greek siphōn tube, siphon

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The first known use of siphonostele was in 1902

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