an actuating force or factor
(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
involving the mind or an intellectual process
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
of or relating to the chin or median part of the lower jaw
a healthy capacity for vigorous activity
