Source : Webster's Revised Unabridged Dictionary (1913)

Dendroid \Den"droid\, Dendroidal \Den*droid"al\, a. [Gr. ?
   treelike; de`ndron tree + ? form: cf. F. dendro["i]de.]
   Resembling a shrub or tree in form; treelike.

Source : WordNet®

dendroid
     adj : resembling a tree in form and branching structure;
           "arborescent coral found off the coast of Bermuda";
           "dendriform sponges" [syn: {arboreal}, {arboreous}, {arborescent},
            {arboresque}, {arboriform}, {dendriform}, {dendroidal},
            {treelike}, {tree-shaped}]