o

o

The Greek word "ο" (o) is the masculine singular definite article in English, meaning "the."

Here, 'Ο' is the masculine singular definite article in Greek, equivalent to 'The' in English, modifying 'κύριος' (gentleman).

Ο κύριος πηγαίνει στο γραφείο.

The gentleman is going to the office.

In this sentence, 'Ο' again serves as the masculine singular definite article, now used with 'αδελφός' (brother).

Ο αδελφός μου είναι στο σπίτι.

My brother is at home.

In this case, 'ο' is part of a proper noun, emphasizing the subject 'Πέτρος' (Peter), and functions in a more conversational or emphatic structure in Greek.

Πες τον ο Πέτρος χρειαζόταν βοήθεια.

Tell them that Peter needed assistance.