Definition of Orthoceras
Or`thoc´e`ras
n.
1.
(Paleon.)
An
extinct
genus
of
Paleozoic
Cephalopoda
,
having
a
long
,
straight
,
conical
shell
.
The
interior
is
divided
into
numerous
chambers
by
transverse
septa
.
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Orpiment
Orpin
orpine
Orrach
Orrery
Orris
Orris pea
Orris root
Orsedew
Orseille
Orsellic
Orsellinic
Ort
Ortalidian
Orthid
Orthis
Orthite
Ortho-
Orthocarbonic
Orthocenter
Orthoceratite
Orthoclase
Orthoclastic
Orthodiagonal
Orthodome
orthodontia
orthodontic
orthodontics
orthodontist
Orthodox
Orthodoxal
Orthodoxality
Orthodoxally
Orthodoxastical
Orthodoxical
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