Oceanides

Oceanides, the nymphs of the Ocean, all daughters of Oceanus, some 3000 in number.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Oceania * Oceanus
[wait for the fun]
Oboe
Obelus
O'Brien, William
O'Brien, William Smith
Obscurantist
Obsidian
Occam
Occasionalism
Oceania
Oceania
Oceanides
Oceanus
Ochils
Ochiltree, Edie
Ochino, Bernardino
Ochterlony, Sir David
Ockley, Simon
O'Connell, Daniel
Octavia
October
Od