When your face is the same in size, shape and proportions on both sides of your nose, this is an example of a situation where your face would be described as symmetrical.
- (bot.) That can be divided into similar halves by a plane passing through the center; also, having the same number of parts in each whorl of leaves.
- (chem.) Exhibiting a regular repeated pattern of atoms in the structural formula; specif., designating a compound (benzene derivative) in which substitution takes place at the alternate carbon atoms.
- (math., logic) Designating an equation, relation, etc. whose terms can be interchanged without affecting its validity.
- (med.) Affecting corresponding parts of the body simultaneously in the same way.