metaxylem

/met-uh-zahy-luhm, -lem/US // ˌmɛt əˈzaɪ ləm, -lɛm //UK // (ˌmɛtəˈzaɪlɛm) //

元木质部,中轴线,元气质层,元气质部

Definitions

n.名词 noun

1
Botany.
- : the part of the primary xylem that is the last to be formed, usually having weblike or pitted surfaces.