* Phytochemistry: The study of the chemical compounds found in plants.
* Phytoestrogen: A plant-derived compound that mimics the effects of estrogen in the body.
* Phytomedicine: The use of plants for medicinal purposes.
* Phytoplankton: Microscopic algae that form the base of the food chain in aquatic ecosystems.
* Phytosanitary: Relating to the health of plants and the prevention of plant diseases.
* Phytoremediation: The use of plants to clean up contaminated soil or water.
* Phytotoxic: Toxic to plants.
* Phytosociological: Relating to the study of plant communities.
* Phytogeography: The study of the geographical distribution of plants.
* Phytosynthesis: The process by which plants convert light energy into chemical energy.
* Phytophagous: Eating plants.
* Phytotherapeutics: The use of plants for therapeutic purposes.
The prefix "phyto-" comes from the Greek word "phyton," meaning "plant."