Osmosis, organic, oxygen, omnivore, and any animals beginning with O.
Octave
O
Robert Oppenheimer was a physicist in charge of the Manhattan Project. The project developed the atomic bomb.
Some six letter words starting with O are:objectoblongoccultocelotoddityoffendofficeorangeorioleorphanoverdooxygen
Geographic terms that start with the letter o:oceanopen rangeoutwash
Organ, Oboe
OLDSMOBILE
Old salt was the name given to an old pirate or crew member who is good at telling stories.Ocean, outcasts and overboard are three more pirate-related terms starting with O.
· other half
no
Biology has four syllables. Bi-ol-o-gy
Some four letter words that start and end with O are:oleoOreoorzo