n.
A horizontal, usually underground stem that often sends out roots and shoots from its nodes. Also called rootstalk, rootstock.
[Greek rhizōma, mass of roots, from rhizoun, to cause to take root, from rhiza, root; see wrād- in Indo-European roots.]
rhi·zom'a·tous (-zŏm'ə-təs, -zō'mə-) adj., rhi·zom'ic adj.
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