1. activation energy

noun. The energy that an atomic system must acquire before a process (such as an emission or reaction) can occur.
Synonyms
energy energy of activation free energy
Antonyms
ill health
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2. activation

noun. (ˌæktəˈveɪʃən) The activity of causing to have energy and be active.
Synonyms
activity energizing invigoration animation vivification activating electrification
Antonyms
inactivity discontinuance sink source peristalsis

3. activation

noun. (ˌæktəˈveɪʃən) Making active and effective (as a bomb).
Synonyms
start commencement beginning
Antonyms
deactivation finish assembly discontinuation

4. activation

noun. (ˌæktəˈveɪʃən) Stimulation of activity in an organism or chemical.
Synonyms
indweller stimulation
Antonyms
inactivation anastalsis inactiveness

5. energy

noun. (ˈɛnɝdʒi) (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs.
Synonyms
electricity activation energy chemical energy separation energy rest energy electrical energy heat energy energy level radiant energy radiation nuclear energy binding energy work heat free energy energy state atomic energy alternative energy energy of activation mechanical energy physical phenomenon
Antonyms
cowardice deaden alive dead inanimateness
Etymology
energy (English)
ἐνέργεια (Ancient Greek (to 1453))

6. energy

noun. (ˈɛnɝdʒi) Forceful exertion.
Synonyms
vigour strength strenuosity athleticism vigor force forcefulness zip
Antonyms
unemotionality transparency opacity dull happiness
Etymology
energy (English)
ἐνέργεια (Ancient Greek (to 1453))

7. energy

noun. (ˈɛnɝdʒi) Enterprising or ambitious drive.
Synonyms
second wind get-up-and-go push drive
Antonyms
fail malfunction cool coldness anestrus
Etymology
energy (English)
ἐνέργεια (Ancient Greek (to 1453))

8. energy

noun. (ˈɛnɝdʒi) An imaginative lively style (especially style of writing).
Synonyms
spirit vigour vitality muscularity vim vigor liveliness verve life sprightliness
Antonyms
alternating current direct current studio idle inactivity
Etymology
energy (English)
ἐνέργεια (Ancient Greek (to 1453))

9. Energy

noun. The federal department responsible for maintaining a national energy policy of the United States; created in 1977.
Synonyms
Department of Energy Energy Department executive department DOE Department of Energy Intelligence DOEI

10. energy

noun. (ˈɛnɝdʒi) A healthy capacity for vigorous activity.
Synonyms
ch'i qi vitality ki vim juice healthiness good health chi
Antonyms
ill health birth death nonbeing nonexistence
Etymology
energy (English)
ἐνέργεια (Ancient Greek (to 1453))
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