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phoresy
phorid fly
phoronid
phosgene
phosgenite
phosph-
phosphatase
phosphate
phosphate rock
phosphatide
phosphatidylcholine
phosphatidylethanolamine
phosphatize
phosphaturia
phosphene
phosphide
phosphine
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phosphate rock
phos·phate rock (plural phos·phate rocks)


noun 
Definition:
 
rock used as fertilizer: a sedimentary rock with a naturally high phosphate concentration. Use: fertilizer, manufacture of phosphorus compounds.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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