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Officer Clarke. - αξιωματούχος, υπάλληλος (P.Andronikou)
 * Officer** (noun): a person who has a position of authority in an organization -   "Were you aware of the speed you were driving at, madam?" "No, officer."

**OVERTIME** (noun) - is the amount of time someone works beyond normal working hours //-// Overtime pay rates can cause workers to work longer hours - //Υπερωρία// - (E.Anastasiou)

**ORTHOPAEDICS** (noun)= is the ward were they go after a surgery to the bones - orthopedics can make a surgery to the spine -  ορθοπεδική

**occupation (noun) =slightly formal a person's job -In the space marked 'occupation' she wrote 'police officer'. επάγγελμα ( Eliana Elia)**

 * OUTPATIENT** (noun) = someone who goes to a hospital for treatment but does not stay there for the night. - Mr. Andreas came to hospital last Friday as an outpatient for medical treatment and blood transfusion. He doesn't require hospitalization. - //εξωτερικός ασθενής νοσοκομείου// (Stephanie Thrasyvoulou)
 * OVARY**: the part of a female plant that produces seeds.- ωοθήκη (Vasoulla Eleftheriou)


 * OVERWHELMING**(adjective) = difficult to find against - She felt an overwhelming need to tell someone about what had happened.- //Αφόρητος// (Χρυσάνθη Στυλιανού)