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phy·to·gen·e·sis

(fī′tō-jĕnĭ-sĭs)

1. The growth and development of a plant.

2. The origin and evolutionary development of plants.

phy′to·ge·netic (-jə-nĕtĭk), phy′to·ge·neti·cal (-ĭ-kəl) adj.

phy′to·ge·neti·cal·ly adv.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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