| tau neutrino | |
| —n | |
| physics a type of neutrino associated with tau particles | |
| a chattering or flighty, light-headed person. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| tau neutrino (tou, tô) Pronunciation Key
A type of neutrino associated with the tau particle, often created in particle interactions involving tau particles (such as the decay of these particles). The tau neutrino has a mass of zero or near zero, and has no electric charge. See more at neutrino. See Table at subatomic particle. |