eta-c meson

[ ey-tuh-see, ee-tuh- ]
/ ˈeɪ təˈsi, ˈi tə- /

noun Physics.

a neutral meson having a mass 5832 times that of the electron and a mean lifetime of approximately 3.1 × 10-22 seconds.
Also called eta-c particle.

Words nearby eta-c meson Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020