弾だん性せい散さん乱らんだんせいさんらんMeanings1nounelastic scatteringphysicsPhysics term for a scattering process where the total kinetic energy is conserved.中ちゅう性せい子しの弾だん性せい散さん乱らんは原げん子し炉ろの設せっ計けいで重じゅう要ようだ。Elastic scattering of neutrons is important in reactor design.