protostele

American  

[proh-tuh-steel, -stee-lee] / ˈproʊ təˌstil, -ˌsti li /

noun

Botany.

1. the solid stele of most roots, having a central core of xylem enclosed by phloem.

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protostele British  

/ ˈprəʊtəˌstiːl, -ˌstiːlɪ /

noun

1. a simple type of stele with a central core of xylem surrounded by a cylinder of phloem: occurs in most roots and the stems of ferns, etc

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protostele Scientific  

/ prō′tə-stēl′,prō′tə-stē′lē /

1. The most primitive form of stele, consisting of a solid core of xylem encased by phloem or of xylem interspersed with phloem. The roots of all vascular plants, as well as the stems of lycophytes, have protosteles.

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Other Word Forms

• protostelic adjective

Etymology

Origin of protostele

First recorded in 1900–05; proto- + stele