Definition

One definition deals to expose with clarity and accurately the characteristics of something specific.

We can identify a definition by words or signs such as: (,) (:), "that is" or ie. A definition also answers questions like "What is_? "What does_mean?" among others.

We can find three types of definition:

• Short Definition 
• Half Definition (Concept,class,characteristics)
• Long Definition (Detailed) Includes examples, negation, analogy, etc. 

 Example:

Hydroelectric Plants

A hydroelectric plant is one that which converts potential energy (related to height) and kinetic (associated with motion) into electrical energy. They result in the evolution of the old mills that took advantage of the rivers current to move a wheel.

These take advantage of the falling water from a dam to carry turbines found on the basis of this and act as mills, are connected to a generator, thereby receiving power of water they start to spin and produce electricity. Electricity travels from generators to transformers where the voltage rises to transport electricity to consumption centers.

The main parts of a hydroelectric plant are: dam, turbines and generators. Other parties also important are the pipes that carry water from the dam to the turbines.

Hydroelectric plants do not tend to be concentrated in any specific area of the world, because they are widely dispersed all over the place.

 Source:http://www.jenijos.com/CENTRALESHIDROELECTRICAS/centrales_hidroelectricas.htm

*Definition of a Hydroelectric Plant

Glossary:

Dam: Reservoir, Closed water, Swamp.

Mills: Grinder, Consists of a large wheel or a set of blades that are propelled by wind or water.

Pipes: Tubes, Passage, Cannon.

Spin: Turn, Revolve, Round.

Wheel: a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines).

Widely:  Widespread, Large, Extensive.