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adj the condition of having one or more pits, depressions, or hollows (often found on tissues and caused by ulcers).
References in periodicals archive ?
The Moon * July 2008 Highlighted feature Size (miles) Description (A) Copernicus (L5) 58 Relatively young crater with many secondaries (B) Sinus Iridum (L14) 160 Sparsely cratered Bay of Rainbows (C) Orontius 76 Large, relatively old highland crater L numbers refer to Charles Wood's Lunar 100 list; see SkyandTelescope.
Even at its current distance, about 300 km from Eros, the craft is revealing a complex, heavily cratered surface, notes NEAR scientist Joseph Veverka of Cornell University.
Simply put, older areas are more heavily cratered than younger ones.