energy

Noun
  1. (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work;
    The units of energy are joules or ergs (synset 111472635)
    "energy can take a wide variety of forms"
    referred to in: natural philosophy, physics - the science of matter and energy and their interactions
    is a type of: physical phenomenon - a natural phenomenon involving the physical properties of matter and energy
    subtypes:
    • activation energy, energy of activation - the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
    • alternative energy - energy derived from sources that do not use up natural resources or harm the environment
    • atomic energy, nuclear energy - the energy released by a nuclear reaction
    • binding energy, separation energy - the energy required to separate particles from a molecule or atom or nucleus; equals the mass defect
    • chemical energy - that part of the energy in a substance that can be released by a chemical reaction
    • electrical energy, electricity, power - energy made available by the flow of electric charge through a conductor
    • energy level, energy state - a definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules
    • rest energy - the energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light
    • work - (physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force
    • heat, heat energy - a form of energy that is transferred by a difference in temperature
    • mechanical energy - energy in a mechanical form
    • radiant energy - energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
    • radiation - energy that is radiated or transmitted in the form of rays or waves or particles
    same as: free energy
  2. Forceful exertion (synset 105043116)
    "he plays tennis with great energy"; "he's full of zip"
    is a type of: force, forcefulness, strength - physical energy or intensity
    subtypes: athleticism, strenuosity - intense energy
    same as: vigor, vigour, zip
  3. Enterprising or ambitious drive (synset 104843914)
    "Europeans often laugh at American energy"
    is a type of: drive - the trait of being highly motivated
    subtypes: second wind - renewed energy or strength to continue an undertaking
    same as: get-up-and-go, push
  4. An imaginative lively style (especially style of writing) (synset 104640554)
    "his writing conveys great energy"; "a remarkable muscularity of style"
    is a type of: life, liveliness, spirit, sprightliness - animation and energy in action or expression
    subtypes: verve, vitality - an energetic style
    same as: muscularity, vigor, vigour, vim
  5. A healthy capacity for vigorous activity (synset 114073625)
    "jogging works off my excess energy"; "he seemed full of vim and vigor"
    is a type of: good health, healthiness - the state of being vigorous and free from bodily or mental disease
    subtypes:
    • juice - energetic vitality
    • ch'i, chi, ki, qi - the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health
    same as: vim, vitality
  6. Any source of usable power (synset 111472496)
    "the DOE is responsible for maintaining the energy policy"
    is a type of: physical phenomenon - a natural phenomenon involving the physical properties of matter and energy
  7. The federal department responsible for maintaining a national energy policy of the United States;
    Created in 1977 (synset 108149937)
    is a type of: executive department - a federal department in the executive branch of the government of the United States
    has: department of energy intelligence, doei - an agency that collects political and economic and technical information about energy matters and makes the Department of Energy's technical and analytical expertise available to other members of the Intelligence Community
    same as: department of energy, doe, energy department

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