This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Fragmentary.

adj. Geology Consisting of broken rock, coal, or ore moved from its place of origin.

adj. consisting of fragments

n. A fragmentary rock.

adj. Fragmentary.

adj. Consisting of the pulverized or fragmentary material of rock, as conglomerate, shale, etc.

n. A fragmentary rock.

Consisting of fragments; fragmentarily combined.

Same as clastic.

adj. consisting of small disconnected parts

"Deimos has a smooth surface due to a blanket of fragmental rock or regolith, except for the most recent impact craters."

fractional   

fragmentary   

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