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the state of being in action or exerting power
the state of being or appearing to be actively engaged in an activity
the action or reaction of something (as a machine or substance) under specified circumstances
eructation, eruption, extravasation
(of volcanos) pouring out fumes or lava (or a deposit so formed)
the state of being in effect or being operative
the state of high or excessive activity or productivity or concentration
a state in which action is feasible
a state of steady vigorous action that is characteristic of an activity
an agency that escapes control and destroys its creator
the state of being in good working order and ready for operation
the state of being in operation
the state of an engine or other mechanism that is idling