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
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.
Organ, Oboe
OLDSMOBILE
· other half
no
Biology has four syllables. Bi-ol-o-gy
Some four letter words that start and end with O are:oleoOreoorzo