ARBITER. The judge to whom two persons refer their differences; not always judicial, but the arbiter, in his own person, of the fate of empires and peoples.
ARBITRAGE. The referring commercial disputes to the arbitration of two or more indifferent persons.
ARBITRATION. The settlement of disputes out of court.
ARBOR. In chronometry, a shaft, spindle, or axis.
ARBY. A northern name for the thrift or sea-lavender.
ARC, or Arch. The segment of a circle or any curved line, by which all angles are measured.
ARC DIURNAL. See [Diurnal Arc].
ARC NOCTURNAL. See [Nocturnal Arc].
ARC OF DIRECTION or Progression. The arc which a planet appears to describe when its motion is direct or progressive in the order of the signs.
ARC OF VISION. The sun's depth below the horizon when the planets and stars begin to appear.