弾性|だんせいdansei[0]heiban (flat)

1. nounelasticity

• Synonym弾力だんりょくNeutralThe force with which something springs back after deforming; common in everyday speech, as in 「肌の弾力」, and used in physics too, while 「弾性」 is the property itself.
• Synonym弾力性だんりょくせいNeutralBroader in use than 「弾性」: covers the physical property of springing back and also figurative flexibility, as in 「弾力性のある運用」.
• Antonym塑性そせいWrittenWritten/formal prose term for the property of not returning to its original shape once deformed by force — the opposite of 「弾性」.

Use 「弾性」 for the physics property of returning to shape after force, as in 「弾性体」「弾性係数」; 「弾力」 for everyday bounce, 「弾力性」 for figurative flexibility, and 「塑性」 when the shape does not recover.

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

1. 物体ぶったいに力ちからを加くわえたときのひずみが、力ちからを取り去とりさると元もとに戻もどろうとする性質せいしつ。