digestion |
the process by which the stomach and intestines change food into a form that the body can use as energy. |
digestive system |
the parts of the body that work together to break down food so that it can be used by the body as energy. The human digestive system includes the mouth, esophagus, stomach, and intestines. |
drain |
something that slowly uses up energy, money, or some other resource. [1/9 definitions] |
dynamic |
full of energy and strength; lively; active. |
effort |
the action of physical or mental energy. [1/2 definitions] |
electricity |
energy caused by the movement of electrons through matter. [1/3 definitions] |
energetic |
full of energy; active. |
engine |
a machine that uses energy from fuel or electricity to do work, such as to move. [1/2 definitions] |
enterprising |
willing to do things that require energy and imagination. |
exhaustion |
complete loss of energy; extreme fatigue. [1/2 definitions] |
exhilarate |
to fill with energy. [1/2 definitions] |
fission |
the splitting of the nucleus of an atom into two or more nuclei. This makes more atoms of lighter elements and gives off large amounts of energy. |
flat1 |
having little interest, energy, or flavor; dull. [1/12 definitions] |
fluorescent |
able to give off visible light after being exposed to a source of heat, light, or other form of energy. |
force |
power, energy, or physical strength. [2/6 definitions] |
fortify |
to give more strength, resistance, or energy to; reinforce. |
frequency |
the number of energy waves that pass a certain point in a certain time period. Frequency is used to measure radio waves and other kinds of radiation. [1/3 definitions] |
fuel |
anything such as wood or gasoline that is burned as a source of energy. [2 definitions] |
full of beans |
(informal) full of energy; very active. [1/2 definitions] |
fusion |
a reaction that combines the nuclei of atoms to form heavier nuclei. A huge amount of energy is released during nuclear fusion. [1/4 definitions] |
generator |
a machine or device that produces electricity or other energy. [2 definitions] |