› the quality of having parts that match each other, especially in a way that is attractive, or similarity of shape or contents: The design of the house had a pleasing symmetry, its oblong shape being picked up in its elongated windows. **Compare**
› specialized mathematics in mathematics, the quality of having two parts that match exactly, either when one half is like an image of the other half in a mirror, or when one part can take the place of another if it is turned 90° or 180°

symmetrical

adjective uk
/sɪˈmet.rɪ.kəl/ (also symmetric) us

symmetrically

adverb uk
/sɪˈmet.rɪ.kəl.i/ us

(Definition of symmetry from the Cambridge Advanced Learners Dictionary & Thesaurus
© Cambridge University Press)

What is the pronunciation of symmetry?
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October 22, 2014

We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,