Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The evolutionary change and diversification resulting from the branching off of new taxa from common ancestral lineages.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An evolutionary splitting event in which each branch and its smaller branches forms a clade.

Etymologies

Greek klados, branch + -genesis.
(American Heritage® Dictionary of the English Language, Fourth Edition)
clado- + -genesis (Wiktionary)

Examples

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