Anything arbitrary, such as an arithmetical value or a fee.
(usually of a decision) Based 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.
Determined by impulse rather than reason; heavy-handed.
Any, out of all that are possible.
The equation is true for an arbitrary value of x.
Determined by independent arbiter.
Not representative or symbolic; not iconic.