SINCE 1828
siphonostele
noun
si·pho·no·stele
| \ sī-ˈfä-nə-ˌstēl
, ˌsī-fə-nə-ˈstē-lē\
, ˌsī-fə-nə-ˈstē-lē\
Definition of siphonostele
: a stele consisting of vascular tissue surrounding a central core of pith parenchyma
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Merriam-Webster unabridged
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