oman
yes there is a invention starting with o oil oven
insects starting with letters O X and Z
O
Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria and Azerbaijan are countries. They begin with the letter A.
Origin
Some six letter words starting with O are:objectoblongoccultocelotoddityoffendofficeorangeorioleorphanoverdooxygen
A few examples of 3-letter words starting with the letter O are:owloweoaroatown
greenland
CHina
O-o snap
· Oman
Octoberfest