Answer:

particle

Answer	Crossword Clue
PARTICLE	Accelerated bit
PARTICLE	Word with board or physics
PARTICLE	Dust bit

PARTICLE	Little bit
PARTICLE	Tiny fragment
PARTICLE	Speck
PARTICLE	Tiny bit
PARTICLE	Scintilla.
PARTICLE	Speck.
PARTICLE	Iota.
PARTICLE	Minute portion.

PARTICLE	Slightest trace.
PARTICLE	Mote.
PARTICLE	Mite.
PARTICLE	Small bit
PARTICLE	Small bit of matter
PARTICLE	Atom or molecule
PARTICLE	Piece of dust
PARTICLE	Proton or electron

PARTICLE	Fermion or boson
PARTICLE	It may be elementary
PARTICLE	It may be charged
PARTICLE	Proton or electron, take your pick
PARTICLE	Minute fragment
PARTICLE	Piece of dust, perhaps