Crossword Genius

In physics, a neutral subatomic particle (8)

Ross

I believe the answer is:

neutrino

(Other definitions for neutrino that I've seen before include "Minute item lacking mass" , "Spinner" , "Uncharged elementary particle" , "Subatomic particle, now said to travel faster than light" , "There's almost nothing to it!" .)

I've seen this clue in The Mirror.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.