subtree
Technical term in computer science and graph theory for a tree structure that is part of a larger tree.
二分探索木の部分木を削除するアルゴリズムを実装した。
I implemented an algorithm to delete a subtree of a binary search tree.
Compound of 部分 (bubun, 'part') and 木 (ki, 'tree'), directly translating the English computing term 'subtree'.