Definition of Activation energy

1. Noun. The energy that an atomic system must acquire before a process (such as an emission or reaction) can occur. "Catalysts are said to reduce the energy of activation during the transition phase of a reaction"

Exact synonyms: Energy Of Activation
Generic synonyms: Energy, Free Energy

Definition of Activation energy

1. Noun. (chemistry physics) The energy required to initiate a reaction. For example, the flame from the fuse of a firecracker provides a small initial amount of energy, after which the explosive reaction proceeds by itself, releasing a considerably larger quantity of energy. A small push given to a stable but top-heavy object may cause it to fall over; the potential energy released during the fall was present in the system all along but could not be realized as long as the object was upright and balanced. ¹

¹ Source: wiktionary.com

Medical Definition of Activation energy

1. The amount of energy (expressed in joules) that is needed to convert all the molecules in one mole of a reacting substance from a ground state to the transition state. (06 May 1997)

Lexicographical Neighbors of Activation Energy

activated macrophage
activated partial thromboplastin time
activated resin
activated sludge
activated sludge method
activated sludge process
activated state
activater
activates
activating
activating(a)
activating agent
activation
activation analyses
activation analysis
activation energy (current term)
activation product
activation record
activational
activationist
activationless
activations
activator
activator appliances
activators
active acetate
active agent
active air defense
active aldehyde

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