Ο φωτισμός ασφαλείας λειτουργεί.

to work

Breakdown of Ο φωτισμός ασφαλείας λειτουργεί.

• ο φωτισμός ασφαλείας: the emergency lighting

Questions & Answers about Ο φωτισμός ασφαλείας λειτουργεί.

What does Ο mean here?

Ο is the definite article the.

In this sentence, ο is:

• masculine
• singular
• nominative

It matches φωτισμός, which is a masculine singular noun.

So:

• ο φωτισμός = the lighting

Why is it ο φωτισμός and not η or το?

Because φωτισμός is a masculine noun.

Greek nouns have grammatical gender, and the article has to agree with the noun:

• ο for many masculine nouns
• η for many feminine nouns
• το for many neuter nouns

Since φωτισμός is masculine, you say ο φωτισμός.

What exactly does φωτισμός mean?

Φωτισμός means lighting or illumination.

It is a noun, not a verb. So it refers to the lighting system or the state of being lit, depending on context.

In this sentence, it means the lighting, specifically the safety/emergency lighting.