rille Definition
a long, narrow valley on the surface of the moon.
Using rille: Examples
Take a moment to familiarize yourself with how "rille" can be used in various situations through the following examples!
Example
The rilles on the moon's surface are believed to have been formed by ancient lava flows.
Example
The spacecraft captured detailed images of the lunar rilles during its mission.
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Summary: rille in Brief
The term 'rille' [ril] refers to a long and narrow valley on the surface of the moon. These features are believed to have been formed by ancient lava flows and have been studied in detail by spacecraft missions.
