f. Gr. Ἄρεος of Ares or Mars: esp. in astronomical terms relating to the planet Mars; as Areocentric a., having Mars as center. Areographer, one who describes the appearance of Mars. Areographic a., pertaining to areography. Areography, description of the physical features of Mars. Areology, scientific investigation of the substance of Mars.
1877. D. Gill, in Mem. R. A. S., XLVI. 94. The areocentric angle between the Earth and the Sun.
1878. Newcomb, Pop. Astron., 566. Hourly motion in areocentric longitude.
1880. Nature, XXI. 213/1. The local indistinctness and confusion that so often puzzle the areographer.
1870. Proctor, Other Worlds, ix. 93. The Martial geography—or perhaps I ought rather to say areography. Ibid. (1881), Poetry Astron., viii. 288. Compare … geology with areology.
