IPA: /ˌɑːbɔːˈrɛsənt/
KK: /ɑrˈbɔrəsənt/
Having the characteristics or appearance of a tree; resembling a tree in form or structure.
The arborescent plants in the garden create a beautiful, tree-like landscape.
Arborescent is formed from "arbor" (meaning tree) and "-escent" (meaning becoming or resembling). The word describes something that resembles or has the characteristics of a tree.
Think of 'arbor' meaning tree, and '-escent' suggesting becoming — so arborescent means becoming tree-like.