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A petty officer is a non-commissioned officer in many navies and is given the NATO rank denotion OR-6. They are equal in rank to sergeant in the British Army and Royal Air Force. A petty officer is superior in rank to leading rate and subordinate to chief petty officer, in the case of the British armed forces
Rae: I am Petty Officer Rollins I'm home on leave.
by sk8ter rae November 04, 2014
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2
A low-ranking officer
"He's a petty officer, he just joined a month ago."
by Maxaraxa December 04, 2013
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