A phase of matter which has definite volume but no definite shape.
The following table summarizes the names given to various phase transitions.
Condensation, Crystal, Fluid, Fluid Mechanics, Freezing, Gas, Melting, Solid, Vaporization
References
Balucani, U. and Zoppi, M. Dynamics of the Liquid State. Oxford, England: Oxford University Press, 1994.
Egelstaff, P. A. An Introduction to the Liquid State, 2nd ed. 1994.
Morel, F. and Hering, J. G. Principles and Applications of Aquatic Chemistry. New York: Wiley, 1993.
Perry, J. and Vanderklein, E. Water Quality: Management of a Natural Resource. Blackwell, 1996.
Stumm, W. and Morgan, J. J. Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters, 3rd ed. New York: Wiley, 1996.
Weisstein, E. W. "Books about Liquids." http://www.ericweisstein.com/encyclopedias/books/Liquids.html.