Ο πόντος είναι δικός μου.

Ο is the masculine singular definite article in the nominative case, so here it means the.

• ο πόντος = the point
• The article matches πόντος, which is a masculine singular noun

Greek uses definite articles very often, and they must agree with the noun in gender, number, and case.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.
Πόντος is simply a masculine noun, so it takes masculine forms around it:

• ο πόντος
• δικός μου (also masculine singular, to match πόντος)

This gender is grammatical, not necessarily logical. It is something you usually learn together with the noun:

• ο πόντος not just πόντος

Because δικός μου means mine / my own, while μου by itself usually means my.

Compare:

• ο πόντος μου = my point
• ο πόντος είναι δικός μου = the point is mine

So in this sentence, the speaker is not just describing the point as belonging to them in a neutral way; they are making mine the predicate.

This is very similar to English:

• my point
• the point is mine

Because δικός must agree with the thing possessed, not with the owner.

Here, the thing possessed is ο πόντος, which is:

• masculine
• singular
• nominative

So the correct form is:

• δικός μου

Other forms would be used with different nouns:

• η τσάντα είναι δική μου = the bag is mine
• το σπίτι είναι δικό μου = the house is mine
• οι βαθμοί είναι δικοί μου = the grades are mine

It is a possessive adjective phrase.

More specifically:

• δικός is a possessive adjective meaning something like one’s own
• μου means of me / my

Together, δικός μου means:

• mine
• or more literally, my own

In this sentence it functions as a predicate, after είναι:

• Ο πόντος είναι δικός μου.

That is the normal Greek pattern with this kind of possessive expression:

• δικός μου = mine
• δική σου = yours
• δικό του = his
• δική μας = ours

So the order is:

δικός + weak possessive pronoun

not usually the other way around.

Είναι is the 3rd person singular of είμαι = to be.

So:

• Ο πόντος = the point
• είναι = is
• δικός μου = mine

Greek normally does not omit the verb to be in this kind of sentence in standard language. So:

• Ο πόντος είναι δικός μου. = correct
• Ο πόντος δικός μου. = not standard as a normal full sentence

Yes, Greek word order is more flexible than English, although the basic version here is very natural:

• Ο πόντος είναι δικός μου.

You might also hear:

• Δικός μου είναι ο πόντος.

That version gives stronger emphasis to mine.

But you cannot usually say:

• Ο πόντος είναι μου ❌

because Greek normally needs δικός in this structure when you mean is mine.

This is a very important distinction.

1. Attributive use

• ο δικός μου πόντος

This means my point / my own point.
Here, the possessive phrase directly describes the noun.

2. Predicate use

• ο πόντος είναι δικός μου

This means the point is mine.
Here, the sentence is saying something about the point.

So:

• ο δικός μου πόντος = my point
• ο πόντος είναι δικός μου = the point is mine

Yes, often it is.

Using δικός μου can sound more emphatic, contrastive, or independent, like English mine or my own.

For example, it can imply:

• not yours
• it belongs to me
• I am the one who gets it

So this structure is very common when the speaker is identifying ownership clearly or contrastively.

A simple pronunciation guide is:

• Ο πόντος είναι δικός μου
• o PON-dos EE-ne dhee-KOS moo

A few notes:

• ο sounds like o in not (depending on accent)
• πόντος has stress on the first syllable: ΠΟΝ-
• είναι is pronounced roughly EE-ne
• δ in Modern Greek sounds like the th in this
• δικός has stress on the second syllable: -ΚΟΣ
• μου sounds like moo

That depends on context. Πόντος can mean different things, such as:

• point
• score point
• dot
• stitch (in some contexts)

So the exact meaning comes from the situation. Grammatically, though, the sentence works the same way regardless of which sense is intended:

• Ο πόντος είναι δικός μου.

In normal everyday Greek, that would usually sound unnatural unless there is a very special context.

The most natural sentence is:

• Ο πόντος είναι δικός μου.

Greek often uses the article where English may or may not. Since πόντος here is a specific noun phrase, the article is expected.

Yes, very easily.

Because δικός μου is a strong possessive expression, the sentence can naturally carry contrast, especially in speech:

• Ο πόντος είναι δικός μου, όχι δικός σου.
• The point is mine, not yours.

Even without the second half, the contrast may be understood from the situation or intonation.