subtree

English

Etymology

Etymology tree
Proto-Indo-European *upó
Proto-Italic *supo
Latin sub
Latin sub-der.
English sub-
Proto-Indo-European *dóru
Proto-Germanic *trewą
Proto-West Germanic *treu
Old English trēow
Middle English tre
English tree
English subtree

    From sub- + tree.

    Pronunciation

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    Noun

    subtree (plural subtrees)

    1. (mathematics, computer science, graph theory) A tree wholly contained in another.

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