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  1. vascular bundle

    • n.
      a strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside.
    • noun: vascular bundle, plural noun: vascular bundles

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    • IPA[ˈvaskyələr ˈbəndl]
    • n.
      a strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the ...

    Oxford American Dictionary