n. 25B6; noun
minute particles of rock : (TINY) BIT, (tiny) piece, speck, spot, fleck; fragment, sliver, splinter. See list.
he never showed a particle of sympathy : IOTA, jot, whit, bit, scrap, shred, crumb, drop, hint, touch, trace, suggestion, whisper, suspicion, scintilla; informal smidgen.
Subatomic Particles
See also quark . lambda particle
antielectron lepton
antineutron meson
antiparticle muon
antiproton neutrino
antiquark neutron
axion nucleon
baryon photon
boson pion
electron positron
fermion proton
gluon psi particle
hadron quark
Higgs (boson/particle) strange particle
hyperon tau particle
kaon WIMP