Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- In osmosis, the tendency for a system (a cell or solution) to take up water from pure water through a differentially permeable membrane. Water flows toward the system with a more negative water potential. (Contrast with solute potential, pressure potential.
Glossary of "Botany (2nd ed)" by Moore et al. (1998)
- The potential energy of water to move down its concentration gradient; water potential is expressed in units of pressure instead of units of energy, because pressure is simpler to measure.
- Moore, R., Clark, W. D. & Vodopich, D. S. 1998. Botany, 2nd ed. -xxiv + 918 pp. WCB/McGraw-Hill, New York.
- Sadava, D., Hillis, D. M., Heller, H. C. & Berenbaum, M. R. 2011. Life: The Science of Biology, 9th ed. -xliv + 1266 pp. Sinauer Associates, Inc., Sunderland.