in A Dictionary of Astronomy
P ublished online February 2018 .
Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 56 words.
A mottled area on a planetary surface; pl. paludes. The name, which means ‘marsh’ or ’swamp’, was first used for features on the Moon in the seventeenth century. It is not a geological term...