Proostracum

Definition of Proostracum

Pro`os´tra`cum
n.1.(Zool.) The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone.
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Proof
Proof charge
proof coin
Proof impression
Proof load
Proof reader
Proof sheet
Proof spirit
Proof staff
Proof stick
Proof text
Proof-arm
Proof-proof
Proofless
-Proostracum-
Prootic
Prop
Propaedeutic
Propaedeutics
Propagable
Propaganda
Propagandism
Propagandist
Propagate
Propagation
Propagative
Propagator
Propagulum
Propane
Propargyl
Proparoxytone
Proped
Propel
Propeller
Propeller wheel
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