Science, Tech, Math › Science Normal Melting Point Definition Share Flipboard Email Print Normal melting point is the melting point at one atmosphere of pressure or at sea level. Glasshouse Images / Getty Images Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry in Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate by Anne Marie Helmenstine, Ph.D. Updated October 15, 2017 Definition: Normal melting point is the temperature at which a solid melts at 1 atmosphere of pressure. Continue Reading