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- pronunciation:
- e
n
 r
ji
- features:
- Word History, Word Explorer, Word Parts
| part of speech: |
noun |
| inflections: |
energies |
| definition 1: |
When something has energy, it has power to do work or be active. You need energy to walk, run, climb, or even to get out of bed in the morning.
After Austin rode his bike all morning, he didn't have the energy to go swimming with us.My grandma has plenty of energy in the morning, but she gets tired in the afternoon.- synonyms:
- force, power
- similar words:
- strength
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| definition 2: |
Energy is power or heat that comes from things such as the sun, wind, moving water, natural gas, or oil. Energy from these things can be used to make electricity. Humans use energy to stay warm, cook, produce light, and make things move or operate.
The sun gives energy to plants so they can grow.Our town gets a lot of its energy for electricity from wind.- similar words:
- power
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| related words: |
ability, fire |
Energy is from energos, an ancient Greek word that means "active or working." The word "energy" was first used in the scientific sense of mechanical or electrical energy in the 1800s.
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conventionally associated with energy |
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effort, force, power, strength |
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some descriptions of energy |
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electrical, solar |
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some kinds of energy |
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electricity |
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some sources of energy |
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chemical, coal, fire, food, fuel, gas, gasoline, light, oil, sun, water, wind |
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some things that produce energy |
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battery, engine, windmill |
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some things that require energy |
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electricity, life, work |
The word energy
contains the following parts:
en-2, em-2
Greek
prefix
that means in, into, inside
  Example words:
- synonyms:
- in-1, intro-
erg, ergo, urg
Greek
root
that means work
Example words:
-y2
Latin and Greek
noun-forming suffix
that means state, quality, act, or practice of
Example words:
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