n. (Abbr. mp)
- The temperature at which a solid becomes a liquid at standard atmospheric pressure.
- The temperature at which a solid and its liquid are in equilibrium, at any fixed pressure.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.