Modulus
/ˈmɒd.jə.ləs/noun
A number used as a divisor in modular arithmetic, or a measure of magnitude in various mathematical and scientific contexts.
Did you know?Modulus is the Latin diminutive of modus, meaning “measure” or “limit,” so its mathematical use preserves the image of a smaller measure governing a larger system.
Etymological Timeline
Proto-Indo-European
PIE
*med-
“To measure, take appropriate action, or establish a boundary”
Classical Latin
Latin
modus
“Measure, manner, limit, or proper proportion”
Classical Latin
Latin
modulus
“A small measure or a model; the diminutive form of modus”
Late Latin
Latin
modulus
“A standard, measure, or regulating proportion”
17th Century
English
modulus
“A technical measure or coefficient adopted from Latin”
19th Century
English
modulus
“A divisor defining remainders in modular arithmetic, and a measure of magnitude in mathematics and physics”