qua·si·par·ti·cle /ˌkweˌzaɪˈpɑrtɪkəl, ˌsaɪ, ˌkwɑzi, si-/
quasiparticle
準粒子
quasiparticle
n : a quantum of energy (in a crystal lattice or other system)
that has position and momentum and can in some respects
be regarded as a particle