energy
[ en-er-jee ]
/ ˈɛn ər dʒi /
noun, plural en·er·gies.
Origin of energy
OTHER WORDS FROM energy
hy·per·en·er·gy, noun self-en·er·gy, nounWords nearby energy
energid,
energism,
energize,
energizer,
energumen,
energy,
energy audit,
energy band,
energy bar,
energy conversion,
energy crop
Example sentences from the Web for energy
British Dictionary definitions for energy
energy
/ (ˈɛnədʒɪ) /
noun plural -gies
intensity or vitality of action or expression; forcefulness
capacity or tendency for intense activity; vigour
vigorous or intense action; exertion
physics
- the capacity of a body or system to do work
- a measure of this capacity, expressed as the work that it does in changing to some specified reference state. It is measured in joules (SI units)Symbol: E
a source of power
See also kinetic energy, potential energy
Word Origin for energy
C16: from Late Latin
energīa, from Greek
energeia activity, from
energos effective, from
en- ² +
ergon work
Medical definitions for energy
energy
[ ĕn′ər-jē ]
n.
The capacity for work or vigorous activity; vigor; power.
The capacity of a physical system to do work.
Scientific definitions for energy
energy
[ ĕn′ər-jē ]
The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. It is measured by the amount of work done, usually in joules or watts. See also conservation of energy kinetic energy potential energy. Compare power work.
Cultural definitions for energy
energy
In physics, the ability to do work. Objects can have energy by virtue of their motion (kinetic energy), by virtue of their position (potential energy), or by virtue of their mass (see E = mc2).
notes for energy
The most important property of energy is that it is conserved — that is, the total energy of an isolated system does not change with time. This is known as the law of
conservation of energy. Energy can, however, change form; for example, it can be turned into
mass and back again into energy.