particle particle /ˈpɑːrtɪkəl/

noun

1. () (nontechnical usage) a tiny piece of anything  ( atom , corpuscle , molecule , mote , particle , speck )
   (nontechnical usage) a tiny piece of anything
     The scientist observed the movement of particles under a microscope.
   The scientist observed the movement of particles under a microscope.
   
   
2. () A body having finite mass and internal structure but negligible dimensions  ( subatomic particle , particle )
   a body having finite mass and internal structure but negligible dimensions
     The physicist accelerated particles in the particle accelerator, unraveling the secrets of the universe at a microscopic level.
   The physicist accelerated particles in the particle accelerator, unraveling the secrets of the universe at a microscopic level.
   
   
3. () A function word that can be used in English to form phrasal verbs  ( particle )
   a function word that can be used in English to form phrasal verbs