symmetrical
Concise Oxford English Dictionary © 2008 Oxford University Press:
symmetrical/sɪˈmetrɪkl/
▶adjective made up of exactly similar parts facing each other or around an axis; showing symmetry.
– derivatives
symmetric adjective,
symmetrically adverb.
symmetric adjective,
symmetrically adverb.
'symmetrical' also found in these Oxford entries:
arch
- asymmetrical
- axisymmetric
- bilateral symmetry
- centric
- chamfer
- crystal
- crystal lattice
- cube
- diphycercal
- dissymmetry
- ellipsoid
- homocercal
- hyperbola
- kite
- normal distribution
- parabola
- pennate
- Rorschach test
- simazine
- skew
- straight
- triquetra
- unsymmetrical
- zygomorphic

