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ocotilloOCP
OCPA
OCR
Ocra
Ocrea
Ocreate
OCS
OCSP
Oct
Octa-
Octachord
Octad
octadecanoic acid
Octaedral
Octaemeron
-- Octagon --
octagonal
Octagynous
Octahedral
Octahedral borax
Octahedral cleavage
Octahedral iron ore
Octahedrite
Octahedron
octal
octal digit
octal forty
octal notation
octal number system
octal numeration system
Octamerous
Octameter
Octagon
Oc´ta`gon
| n. | 1. | (Geom.) A plane figure of eight sides and eight angles. | |||
| 2. | Any structure (as a fortification) or place with eight sides or angles.
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| Noun | 1. |  octagon - an eight-sided polygon |