How to say "symmetry" in Japanese

• 対称たいしょうCommon
  nounThe direct word for symmetry as exact correspondence of parts, such as mirror-image left and right halves; it is the term used in mathematics and in describing shapes, patterns and buildings.
  地球ちきゅうは赤道せきどうに関かんして対称たいしょうではない。↗

  The earth is not symmetrical about the equator.
• 均整きんせいCommon
  nounMatches 'symmetry' in the sense of harmonious balance and proportion of form rather than exact correspondence; think of a well-proportioned physique or a balanced design, where strict mirror symmetry is not the point.
  彼女かのじょは均斉きんせいのとれた姿すがたをしている。↗

  She has a well-proportioned figure.

Use 対称 for symmetry as exact correspondence of parts, especially mirror-image left–right matching in shapes and mathematics; use 均整 when you mean pleasing balance or proportion of form rather than strict symmetry.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 対称たいしょうsymmetry
• 均整きんせいsymmetry
• シンメトリーsymmetry
• 相称そうしょうsymmetry
• 対称性たいしょうせいsymmetry
• 左右相称さゆうそうしょうsymmetry