1. The condition in which something is the same over time. English = uniformity.
2. A state in which everyone or everything behaves or looks the same as everyone or everything else. English = uniformity.
3. Something which is the same for everyone or is considered to be the correct and acceptable form for everyone (especially regarding the words and signs of a language). English = standard.
4. In mathematics, the number you get when you add two or more numbers together and divide the total by the number of numbers you added together. English = mean, average.