metaxylem

metaxylem

[met-uh-zahy-luhm, -lem]
noun Botany.
the part of the primary xylem that is the last to be formed, usually having weblike or pitted surfaces.

Origin:
1900–05; meta- + xylem

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World English Dictionary
metaxylem (ˌmɛtəˈzaɪlɛm)
 
n
Compare protoxylem xylem tissue that consists of rigid thick-walled cells and occurs in parts of the plant that have finished growing

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