Something that has been differentiated or stratified.
To (cause to) go through a process of development called differentiation; to make or become different in form or function.
To recognize a distinction or difference between two things.
To make different; to change, modify.
To perceive the difference between things; to discriminate.
To calculate the derivative of a function.
To calculate the differential of a function of multiple variables.
To teach a lesson in multiple different ways in order to meet the needs of more or less advanced students.