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proostracum

3 senses · Free VividLex dictionary · Thesaurus

1. n. The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone. Source: opted
2. The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone. Source: webster
3. n. The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone. Source: ecdict

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phragmocone allied anterior belemnites calcareous cephalopods fossil guard horny prolongation see whether

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proofed proofer proofers proofing proofless proofread proofreader proofreaders proofs prootic prop

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