[sym.met.ri.cal] or sym.met.ric adj (1751) 1: having, involving, or exhibiting symmetry
2: having corresponding points whose connecting lines are bisected by a given point or perpendicularly bisected by a given line or plane "~ curves" 3 symmetric: being such that the terms or variables may be interchanged without altering the value, character, or truth "symmetric equations" "R is a symmetric relation if aRb implies bRa"
4. a: capable of division by a longitudinal plane into similar halves "~ plant parts" b: having the same number of members in each whorl of floral leaves "~ flowers"
5: affecting corresponding parts simultaneously and similarly "~ rash"
6: exhibiting symmetry in a structural formula; esp: being a derivative with groups substituted symmetrically in the molecule -- sym.met.ri.cal.ly adv -- sym.met.ri.cal.ness n