i'm in the middle of writing my statement of purpose and i'm wondering if anyone knows what type of people will be reading it -- admissions? professors?

i want to know if i should be giving a quick definition of planning terms, like bus rapid transit or complete streets, or should i just assume they know what i'm talking about?

I don't want to not give enough detail, but i also don't want to talk down to whoever is reading my essay.

any insight on this would be greatly appreciated!!