energy of activation
- n the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
energy secretary
- n the person who holds the secretaryship of the Department of Energy
- n the position of the head of the Department of Energy
energy state
- n a definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules
enervation
- n lack of vitality
an enervation of mind greater than any fatigue - n serious weakening and loss of energy
- n surgical removal of a nerve