P3I1S1O1L1I1T1H4S1
14 points
PISOLITHS is validvalid
PISOLITH, a small rounded concretion of limestone
PISOLITH, a limestone with pea sized formations in circles, also PISOLITE
PISOLITH, a small rounded concretion of limestone
PISOLITH, a limestone with pea sized formations in circles, also PISOLITE