the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
the activity of causing to have energy and be active
stimulation of activity in an organism or chemical
making active and effective (as a bomb)
(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
forceful exertion
enterprising or ambitious drive
an imaginative lively style (especially style of writing)
the federal department responsible for maintaining a national energy policy of the United States; created in 1977
