Physics.
any of the energy levels of a physical system, esp. an atom, molecule, etc., that has higher energy than the lowest energy level.
[ 1925-30 ]
Physics.
any of the energy levels of a physical system, esp. an atom, molecule, etc., that has higher energy than the lowest energy level.
[ 1925-30 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012