Having symmetry about a central point, where every part on one side mirrors a corresponding part on the opposite side.
From Latin 'centrum' (center) + Greek 'symmetria' (proportion). This crystallographic and mathematical term became standard in the 20th century for describing symmetric structures.
A simple square or cube is centrosymmetric—if you spin it 180 degrees around its center point, it looks exactly the same, which is why these shapes appear in nature from snowflakes to mineral crystals.
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