Dictionary
re•ge•la•tion
Pronunciation: (rē"ju-lā'shun), [key]—
n. Physics.
a phenomenon in which the freezing point of water is lowered by the application of pressure; the melting and refreezing of ice, at constant temperature, caused by varying the pressure.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.