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
.
Word:
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Pronunciation
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Pronunciator
Pronunciatory
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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