a very tiny amount; iota it doesn't make a particle of difference
a function word, esp (in certain languages) a word belonging to an uninflected class having suprasegmental or grammatical function the Greek particles ``mēn'' and ``de'' are used to express contrast, questions in Japanese are indicated by the particle ``ka'', English ``up'' is sometimes regarded as an adverbial particle
a common affix, such as re-, un-, or -ness
(physics) a body with finite mass that can be treated as having negligible size, and internal structure
1380, "small part or division of a whole," from L. particula "little bit or part," dim. of pars (gen. partis), see part (n.). In construction, particle board (1957) is so called because it is made from chips and shavings of wood.