Function: noun
Date: 1927
: a state of a physical system (as an atomic nucleus, an atom, or a molecule) that is higher in energy than the ground state
Function: noun
Date: 1927
: a state of a physical system (as an atomic nucleus, an atom, or a molecule) that is higher in energy than the ground state
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012