concatenation tree noun2 •A tree data structure whose internal nodes represent the concatenation of their child branches.When working on the tree representations in our algorithms, we assume that the symbol [.] (vₗ, vᵣ) means a concatenation tree with root "." and children vₗ and vᵣ. — 2002 •A phylogenetic tree constructed from concatenated alignments. formsconcatenation trees