A person or object having the power of judging and determining, or ordaining, without control; one whose power of deciding and governing is not limited.
A person appointed, or chosen, by parties to determine a controversy between them; an arbitrator.
A component in circuitry that allocates scarce resources.
To act as arbiter.
Someone who is an expert in, or devoted to, some specific branch of study or research.
A stenotopic species.
A physician whose practice is limited to a particular branch of medicine or surgery.
Any of several non-commissioned ranks corresponding to that of corporal.
An organism that is specialized for a particular environment.
Specialised, involving detailed knowledge of a restricted topic.