Science, Tech, Math › Science Absolute Temperature Definition Share Flipboard Email Print Steven Taylor / 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. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated March 07, 2018 Absolute temperature is temperature measured using the Kelvin scale where zero is absolute zero. The zero point is the temperature at which particles of matter have their minimum motion and can become no colder (minimum energy). Because it is "absolute," a thermodynamic temperature reading is not followed by a degree symbol. Although the Celsius scale is based on the Kelvin scale, it does not measure absolute temperature because its units are not relative to absolute zero. The Rankine scale, which has a degree interval the same as the Fahrenheit scale, is another absolute temperature scale. Like Celsius, Fahrenheit is not an absolute scale.