[klad-uh-gram, kley-duh-] 
| a branching diagram depicting the successive points of species divergence from common ancestral lines without regard to the degree of deviation. |
| clad·o·gram (klād'ə-grām', klā'də-) n. A branching, treelike diagram in which the endpoints of the branches represent specific species of organisms. It is used to illustrate phylogenetic relationships and show points at which various species have diverged from common ancestral forms. [Greek klados, branch + -gram.] |
əˌgræm