noun
Technical term in group theory; refers to the number of elements in a group or the smallest positive integer n such that g^n equals the identity.
有限群の位数は、その群に含まれる元の個数である。
The order of a finite group is the number of elements it contains.
この元の位数は5なので、5乗すると単位元になる。
Since the order of this element is 5, raising it to the 5th power yields the identity element.