名詞 modulus:

1. an integer that can be divided without remainder into the difference between two other integers
2. the absolute value of a complex number
3. (physics) a coefficient that expresses how much of a specified property is possessed by a specified substance

mod.u.lus

n.（名詞）
【復數(shù)】 mod.u.li[-lo.] 縮寫 m,M
Physics A quantity that expresses the degree to which a substance possesses a property, such as elasticity.
【物理學】 模數(shù)，模量：一種參數(shù)，表示一種物質(zhì)具有一個特性之程度，如彈性

Mathematics The absolute value of a complex number.
【數(shù)學】 模：一個復數(shù)的模
Abbr. modA number by which two given numbers can be divided and produce the same remainder.
縮寫 mod模數(shù)：一個整數(shù)，當分別被兩個給定整數(shù)除時，得到相同的余數(shù)
The number by which a logarithm in one system must be multiplied to obtain the corresponding logarithm in another system.
對數(shù)的模：當從一個系統(tǒng)變換到另一個系統(tǒng)時為得到相應的對數(shù)須乘以的一個數(shù)

來源：
Latin [diminutive of] modus [measure] * see med-
拉丁語 [] modus的小后綴 [測量] *參見 med-