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Oceania
a region including many islands in the Pacific.
oceanic
Relating to the large bodies of salt water.
oceanographer
A scientist who studies the sea and its life.
oceanographic
Related to the scientific study of the sea.
oceanography
The scientific study of the sea and marine life.
och
An informal expression of surprise or realization.
ochre
A yellowish-brown color.
OCS
A computer system that manages phone network billing.
octagon
A shape with eight sides.
octagonal
Having eight sides and eight angles.
octane
A number measuring the quality of engine fuel.
octave
A series of eight musical notes.
octopus
A sea creature with eight arms.
ocular
Related to the eye or vision.
odd
Unusual or different from what is expected.
odd duck
A person who is different or unusual.
odd fish
A strange or unusual person.
oddball
A person who behaves unusually or differently.
oddity
Something unusual or out of the ordinary.
oddly
In a strange or unusual manner.
odds
the ratio of chances for and against
odds and ends
Various small items.
odds and sods
Various small, unrelated items or things.
ode
A poem expressing deep feelings or thoughts.