The Collaborative International Dictionary
Dendrachate
Dendrachate \Den"dra*chate\, n. [L. dendrachates; Gr. de`ndron a tree + ? agate: cf. F. dendrachate, dendragate.] (Min.) Arborescent or dendritic agate.
Wiktionary
dendrachate
n. (context mineral English) An arborescent or dendritic agate.