Dictionary

To change with time or a similar parameter.

Example: He varies his magic tricks so as to minimize the possibility that any given audience member will see the same trick twice.

To institute a change in, from a current state; to modify.

Example: You should vary your diet. Eating just bread will do you harm in the end.

Not to remain constant: to change with time or a similar parameter.

Example: His mood varies by the hour.

(of the members of a group) To display differences.

Example: The sprouting tendency of potatoes varies between cultivars, years and places of growing.

A kind of variable, used by a fragment shader, that interpolates values across a primitive, so as to produce gradient effects etc.