Both sides of an object are the same (as opposed to asymmetric where both sides of an object are not the same) in size, shape or position.

occurring in the same parts on opposite sides of the body (e.g., right leg and left leg).

A characteristic of a sample or population which looks the same to the right of the peak as it looks to the left of the peak.

equal and balanced when one side is compared to the other

Used to describe a function whose graph looks the same on both sides of the y-axis; that is, func() = func(-) for all .