Definitionen
1.AdjectiveBased on individual discretion or judgment; not based on any objective distinction, perhaps even made at random."Benjamin Franklin's designation of "positive" and "negative" to different charges was arbitrary.; The decision to use 18 years as the legal age of adulthood was arbitrary, as both age 17 and 19 were reasonable alternatives."
2.AdjectiveDetermined by impulse rather than reason; often connoting heavy-handedness.
3.AdjectiveAny, out of all that are possible."The equation is true for an arbitrary value of x."
4.AdjectiveDetermined by independent arbiter.
5.AdjectiveNot representative or symbolic; not iconic.
6.NounAnything arbitrary, such as an arithmetical value or a fee.