[ 'mɒdjʊləs ]
■ noun ( plural moduli -lʌɪ , -li: ) Mathematics
1》 another term for absolute value (in sense 1).
↘the positive square root of the sum of the squares of the real and imaginary parts of a complex number.
2》 a constant factor or ratio, especially one relating a physical effect to the force producing it.
3》 a number used as a divisor for considering numbers in sets, numbers being considered congruent when giving the same remainder when divided by it.
Origin
C16: from L., lit. 'measure', dimin. of modus .