## PARAMETER

### Parameter

A**parameter**, in its common meaning, is a characteristic, feature, or measurable factor that can help in defining a particular system. A parameter is an important element to consider in evaluation or comprehension of an event, project, or situation.

*Parameter*may have more specific interpretations in mathematics, logic, linguistics, environmental science, or other disciplines.

*The above text is a snippet from Wikipedia: Parameter*

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### parameter

#### Noun

- A variable kept constant during an experiment, calculation or similar.
- A name in a function or subroutine definition that is replaced by, or bound to, the corresponding actual argument when the function or subroutine is called: a formal parameter.
*Roughly, a tuple of arguments could be thought of as a vector, whereas a tuple of***parameters**could be thought of as a covector (i.e., linear functional). When a function is called, a**parameter**tuple becomes "bound" to an argument tuple, allowing the function instance itself to be computed to yield a return value. This would be roughly analogous to applying a covector to a vector (by taking their dot product (or, rather, matrix-product of row vector and column vector)) to obtain a scalar.

- The value which is passed into the function to instantiate such a name; the argument or actual parameter.
- A characteristic or feature that distinguishes something from others.
- In the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.
*The***parameter**of the principal axis of a conic section is called the latus rectum.

- The ratio of the three crystallographic axes which determines the position of any plane.
- The fundamental axial ratio for a given species.

*The above text is a snippet from Wiktionary: parameter*

and as such is available under the Creative Commons Attribution/Share-Alike License.

and as such is available under the Creative Commons Attribution/Share-Alike License.