Particle /(?)/

Par·ti·cle

Particle

n.
  1. A minute part or portion of matter; a morsel; a little bit; an atom; a jot; as, a particle of sand, of wood, of dust.
    The small size of atoms which unite To make the smallest particle of light.
    — Blackmore.
  2. Any very small portion or part; the smallest portion; as, he has not a particle of patriotism or virtue.
    The houses had not given their commissioners authority in the least particle to recede.
  3. A crumb or little piece of consecrated host. (R. C. Ch.)
  4. A subordinate word that is never inflected (a preposition, conjunction, interjection); or a word that can not be used except in compositions; as, ward in backward, ly in lovely. (Gram.)
  5. An elementary particle. (Physics)