TITLE: What does the word "norm" stands for in linear algebra?
QUESTION [8 upvotes]: I know that "norm" is the formal name for length, but where did this name came from? or from what language is came from?
Thank you in advance.

REPLY [3 votes]: It is derived from the Latin word norma, which means rule or standard. ‘Ruler’ — a straight stick that measures length — has the same origin, which is pretty much the same as what a norm does in mathematics.