Obadiah.
origins
The Hebrew prophet in the Bible that starts with "O" is Obadiah. He is known for his short book in the Old Testament that contains a message of judgment against the nation of Edom.
Ovary.
oar
Ovary
The bulk of it starts with Genesis Chapter 17
Do you mean what Norse god starts with o? Odin is a Norse go that starts with O.
optic nerve organs ovary oesophagus
One human body part that starts with the letter "O" is the occipital lobe, which is a region in the brain responsible for visual processing. Another body part is the ovaries, which are part of the female reproductive system and produce eggs. Additionally, the oesophagus, also known as the esophagus, is a muscular tube that connects the throat to the stomach, allowing for the passage of food during digestion.
Omoo is the Melville tale that starts with O.
Ohio - part of the Northwest Territory was admitted to the Union as the State of Ohio.
A machine that starts with O is an oscillating fan.