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Meaning of dendrogram

den•dro•gram

Pronunciation: (den'dru-gram"), [key]
— n. Biol.
  1. a treelike diagram depicting evolutionary changes from ancestral to descendant forms, based on shared characteristics. Cf. cladogram, phenogram.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.