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Parameter (plural Parameters)
  1. (mathematics, physics) A variable kept constant during an experiment, calculation or similar.
  2. (programming) 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.
  3. (programming) The value which is passed into the function to instantiate such a name; the argument.
  4. A characteristic or feature that distinguishes something from others

Synonyms for Parameter

Derived terms

actual parameter; formal parameter

Related terms

parametric; parametrise, parametrize


boundaries, boundary condition, bounds, bourns, canon, catch, check, circumference, circumscription, clause, compass, condition, confines, coordinates, criterion, degree, donnee, edges, escalator clause, escape clause, escape hatch, fine print, fringes, gauge, given, graduated scale, grounds, joker, kicker, limitations, limiting condition, limits, marches, measure, metes, metes and bounds, model, norm, obligation, outlines, outskirts, pale, parameters, pattern, perimeter, periphery, prerequisite, provision, provisions, proviso, quantity, reading, readout, requisite, rule, saving clause, scale, sine qua non, skirts, small print, specification, standard, stipulation, string, terms, test, touchstone, type, ultimatum, value, verges, whereas, yardstick


From French paramètre, from New Latin parametrum (parameter), from Ancient Greek παρά (beside) + μέτρον (measure).


  • (the value used to instantiate the name): Some authors regard use of parameter to mean argument as imprecise, preferring that parameter refers only to the name that will be instantiated, and argument to refer to the value that will be used to instantiate it at runtime.


  • (UK) IPA: /pəˈɹæm.ə.tə/, SAMPA: /p@"r{m.@.t@/




Parameter c.

  1. a parameter