Symmetry – sym–me–try (sim–i–tree) –noun, plural –tri
1. Beauty based on or characterized by such excellence of proportion.
2. An impressive sense of harmonious or aesthetically pleasing proportionality and balance.
3. The correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.