Definition of parameter
1a : an arbitrary constant whose value characterizes a member of a system (such as a family of curves); also : a quantity (such as a mean or variance) that describes a statistical populationb : an independent variable used to express the coordinates of a variable point and functions of them — compare parametric equation
2 : any of a set of physical properties whose values determine the characteristics or behavior of something parameters of the atmosphere such as temperature, pressure, and density
3 : something represented by a parameter : a characteristic element; broadly : characteristic, element, factor political dissent as a parameter of modern life health care is a universal parameter, … a ubiquitous concern across every age, occupation, and class line. — Wayne Biddle
parametricplay \ˌper-ə-ˈme-trik, ˌpa-rə-\ adjective
parametricallyplay \ˌper-ə-ˈme-tri-k(ə-)lē, ˌpa-rə-\ adverb
Recent Examples of parameter from the Web
Many key Senate Republicans are waiting for the White House to lay out some of its parameters.
Wilhite found a way to do so using a compression algorithm (more on this soon) combined with image parameters like the number of available colors (256).
But the parameters of the probe explicitly include the leak of classified information, which is at the heart of Nunes’s interest in possible unmasking by the Obama administration.
Special session parameters to be issued Wednesday will include debate over Louisiana's operating and construction budgets, but not taxes, according to information provided to The Associated Press by the governor's office.
Tuesday’s news conference is expected to reveal additional details, such as the timeline of the bid process and the parameters of what the city will request of bidders.
Wingard's budgets have typically been quite small, working within the parameters of independent financing that often give his films less than $5 million for production.
Meteorology behind tonight’s potential heavy downpours: Amounts of the atmospheric parameter known as precipitable water will be higher than normal (for this time of year)
And the two of them were up against some heavy design parameters.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'parameter'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
parameter vs. perimeter
It's very easy to confuse parameter with perimeter. Not only do the two words sound the same, they both connote a boundary or limit.
When parameter is used to mean "a boundary or limit," it is usually in its plural form, and often as the object of a preposition such as within or beyond:
Let's face it, managing weight loss or maintenance can be trying enough within the parameters of a daily routine.
Geoff Kerr, Weight Watchers, November 1991
Though candor sometimes encourages Bruno to "stray beyond the parameters of good taste," his interaction with Lydia is always convincingly portrayed as a loving, tender relationship.
Ron Charles, The Washington Post, 8 Feb. 2011
In geometry, perimeter refers to the boundary of a closed plane figure. You might remember calculating perimeters in school. If each side of an equilateral triangle measures 9 feet, then the perimeter of the triangle measures 27 feet. In more general use, perimeter describes an outer stretch, as in "The college president lived in a house on the perimeter of the campus."
Parameter originally had a meaning pertaining to mathematics as well. The dictionary defines it as "an arbitrary constant whose value characterizes a member of a system (as a family of curves); also : a quantity (as a mean or variance) that describes a statistical population" as well as "an independent variable used to express the coordinates of a variable point and functions of them."
Some twentieth-century usage commentators objected to the use of a scientific-sounding word like parameter in general contexts (as in the examples above), especially to mean "a limit or boundary," theorizing that perimeter must have been what the speaker or writer intended.
However, perimeter was not often used in the phrasings that parameter is used in (that is, as the object of within or beyond) until much later. In fact, a word such as bounds or range or confines often serves as a more appropriate equivalent for parameter than the marginal connotations of perimeter:
But a true novel is an extended piece of fiction: Length is clearly one of its parameters.
Anthony Burgess, The New York Times Book Review, 5 Feb. 1984
Shields will then subsume that request in the overall City operating budget that he will recommend to the City Council in mid-March, and the Council will make its final decisions on the parameters of the budget, including any tax increases or cuts, by the end of April.
Nicholas F. Benton, The Falls Church News Press, 6 Jan. 2016
Origin and Etymology of parameter
New Latin, from para- + Greek metron measure — more at measure
First Known Use: 1833
PARAMETER Defined for English Language Learners
Definition of parameter for English Language Learners
: a rule or limit that controls what something is or how something should be done
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