Look up absolute unit in Wiktionary, the free dictionary.

Absolute number may refer to:

• Quantity, a property that can exist as a multitude or magnitude

Mathematics

• Absolute value, the non-negative value of a real number without regard to its sign
• Absolute error, the absolute value of an approximation error in some data
• Absolute difference, the absolute value of the difference of two real numbers
• Absolute pseudoprime, a class of pseudoprimes that come from Fermat's little theorem
• Absolute scale, system of measurement that begins at a zero point and progresses in only one direction