Rille / ˈrɪl / [1] (German for 'groove') is typically used to describe any of the long, narrow depressions in the surface of the Moon that resemble channels. The Latin term is rima, plural rimae. Typically, a rille can be several kilometers wide and hundreds of kilometers in length.

Rille, any of various valleys or trenches on the surface of the Moon. The term was introduced by early telescopic observers—probably by the German astronomer Johann Schroeter—to denote such lunar features. The word rima (from Latin, ‘fissure’) …

Mar 14, 2025 · Rilles are lunar valleys or trenches that can stretch for hundreds of kilometers. There are three main types of rilles: sinuous, arcuate, and linear. Sinuous rilles are winding …

The meaning of RILL is a very small brook.

Apr 17, 2017 · A rille is a long and narrow valley on the Moon and appears to have been formed by subsidence or collapse of surface materials along a crustal fracture (Baldwin 1968), which could be ascribed to the thermal and mechanical erosion, construction, and volatiles between the basement surface and a surficial permafrost layer (Cameron 1964, Quaide 1965).

1. A long, narrow, roughly straight channel or groove on the surface of a solar system body like a planet or moon. 2. Variant of rill. [German Rille; see rei- in Indo-European roots, from Low German rille; see rei- in Indo-European roots.] American Heritage® Dictionary of the English Language, Fifth Edition.

Oct 2, 2010 · First discovered over 200 years ago with a small telescope, rilles (rhymes with pills) appear all over the Moon. Three types of rilles are now recognized: sinuous rilles, which have many meandering curves, arcuate rilles which form sweeping arcs, and straight rilles, like Ariadaeus Rille pictured above.

What does the noun rille mean? There is one meaning in OED's entry for the noun rille. See ‘Meaning & use’ for definition, usage, and quotation evidence. How common is the noun rille? …

There are three main types: straight (or linear) rilles which appear to be graben, where the surface has dropped between two parallel faults; arcuate rilles, which are similar but curved in plan view, and often concentric with a circular mare basin; and …

Rille definition: A long, narrow, roughly straight channel or groove on the surface of a solar system body like a planet or moon.