areography

1 of 2

noun (1)

ar·​e·​og·​ra·​phy

ˌer-ē-ˈä-grə-fē

plural -es

: description of the surface of the planet Mars

areographic

ˌer-ē-ə-ˈgra-fik

adjective

Mariner 6 emerged from behind the disk of Mars on the night side, near the north pole, in areographic latitude 79° north, longitude 274°.

—Sky & Telescope, October 1969

areography

2 of 2

noun (2)

ˌer-ē-ˈä-grə-fē

plural -es

: descriptive biogeography

Word History

Etymology

Noun (1)

areo- + -graphy

Noun (2)

area + -o- + -graphy

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now