What's "parameter" mean?

Native speaker’s answer
Rebecca
A "parameter" is a measurement or other numerical factor that is used to define or measure a system and how it works. In essence, it can be any characteristic that can be measured to identify a system and how (well) it works. Ex: In my work, I study parameters like the average height of men and women in America. Ex: The size and health of vegetable crops is one parameter that scientists study constantly.