bicollateral
adjective
bi·col·lat·er·al
¦bī-kə-¦la-t(ə-)rəl
of a vascular bundle
: having the phloem both external and internal to the xylem compare collateral
bicollaterality noun
¦bī-kə-ˌla-tə-¦ra-lə-tē
plural -es
Word History
Etymology
International Scientific Vocabulary bi- entry 1 + collateral