Δηλώνεται ανεύρεση υπό την προϋπόθεση ότι το εντόπισε ο κάτοχος διαβατηρίου.

Δηλώνεται is the present passive / mediopassive, 3rd person singular form of δηλώνω (to declare, report, state).

So literally it means something like:

• it is declared
• it is reported
• a declaration/report is made

In official or bureaucratic Greek, this kind of passive wording is very common. It can sound a bit impersonal in English, but in Greek it is normal.

Ανεύρεση is a formal noun meaning finding, discovery, or recovery.

It comes from the verb ανευρίσκω / ευρίσκω (to find), and it is more formal than everyday εύρεση in some contexts.

In this sentence, ανεύρεση is the thing being reported or declared.

So:

• Δηλώνεται ανεύρεση = A finding/recovery is reported or The finding is declared

This is fairly official-sounding Greek.

Greek often uses nouns without an article in formal, official, or administrative language.

So ανεύρεση without η / την does not necessarily sound strange. It can mean something like:

• a finding
• finding
• recovery

Official Greek often sounds more compressed than everyday speech.

A less formal version might use an article depending on context, but in bureaucratic language, article omission like this is very common.

Υπό την προϋπόθεση ότι is a fixed formal expression meaning:

• on the condition that
• provided that
• under the condition that

It is quite formal and common in legal, administrative, and official writing.

Breakdown:

• υπό = under
• την προϋπόθεση = the precondition / the condition
• ότι = that

So literally it is something like under the condition that...

In everyday Greek, people might also say:

• με την προϋπόθεση ότι
• αν
• εφόσον

depending on style and meaning.

The noun προϋπόθεση appears here in the accusative singular: την προϋπόθεση.

That is because the preposition υπό in this fixed expression takes the accusative.

So:

• η προϋπόθεση = nominative
• την προϋπόθεση = accusative

This whole phrase behaves like one formal chunk: υπό την προϋπόθεση ότι.

As a learner, it is best to memorize the whole expression as a set phrase.

Here ότι means that and introduces a subordinate clause.

So:

• υπό την προϋπόθεση ότι... = on the condition that...

The clause after ότι explains the condition.

This is not the same as the relative pronoun ό,τι with a comma-like accent distinction in writing, which means whatever. Here it is simply the conjunction ότι = that.

Το here is a weak object pronoun meaning it.

So:

• το εντόπισε = he/she found it or he/she located it

Greek object pronouns usually come before the verb:

• το βλέπω = I see it
• το βρήκα = I found it
• το εντόπισε = he/she located it

So the sentence is saying that the passport holder found it.

Εντόπισε is the aorist active, 3rd person singular of εντοπίζω.

It means:

• found
• located
• spotted
• tracked down

The aorist is used because it refers to a completed action: the passport holder located it.

So even though the main verb Δηλώνεται is in the present (is reported / is declared), the subordinate clause uses the past because the finding happened earlier.

That is very natural:

• A report is made, provided that the passport holder found it.

The reporting is happening now; the locating happened before.

Greek word order is much more flexible than English word order.

So both of these are possible in principle:

• ο κάτοχος διαβατηρίου το εντόπισε
• το εντόπισε ο κάτοχος διαβατηρίου

In the sentence you gave, the object pronoun το comes before the verb, which is normal, and the subject ο κάτοχος διαβατηρίου comes after the verb.

This does not sound wrong in Greek. In fact, it is very common, especially in formal writing or when the subject is being stated after the action.

Ο κάτοχος διαβατηρίου means the holder of a passport or more naturally the passport holder.

Breakdown:

• ο κάτοχος = the holder
• διαβατηρίου = of a passport / passport

So this is a noun + genitive structure:

• κάτοχος άδειας = holder of a permit
• κάτοχος λογαριασμού = holder of an account
• κάτοχος διαβατηρίου = holder of a passport

In English, we often turn this into an adjective-like noun phrase: passport holder.

Διαβατηρίου is the genitive singular of το διαβατήριο (passport).

The genitive is used here to show what kind of holder someone is:

• κάτοχος διαβατηρίου = holder of a passport
• literally, holder of passport

This is a very common Greek pattern. The first noun names a person or role, and the second noun in the genitive tells you what they possess or are connected with.

Greek often omits the article in this kind of fixed or institutional expression, especially in formal language.

So:

• ο κάτοχος διαβατηρίου

can mean:

• the holder of a passport
• the passport holder

If the context required a very specific passport, Greek could also use an article, but in official phrasing the article is often left out after nouns like κάτοχος.

This is similar to compressed formal phrases in English such as passport holder, license holder, account owner.

It is definitely formal, administrative, or bureaucratic Greek.

Clues include:

• Δηλώνεται
• ανεύρεση
• υπό την προϋπόθεση ότι
• ο κάτοχος διαβατηρίου

In everyday speech, a person would probably say something simpler and more natural-sounding.

For example, a more conversational version might be closer to:

• Η ανεύρεση δηλώνεται μόνο αν το βρήκε ο κάτοχος του διαβατηρίου.

That is still not extremely casual, but it is less stiff.

Because the Greek is highly formal and compressed. Greek official language often uses:

• passive verbs
• abstract nouns
• fixed legal-style expressions
• dense noun phrases

A very literal translation may sound awkward in English, even if the Greek is correct.

So a learner should separate:

1. what the Greek literally says
2. how English would naturally express the same idea

That is why a sentence like this may be grammatically straightforward in Greek but still feel unusual when translated word-for-word.

Yes. In official Greek, passive forms like δηλώνεται can sometimes feel almost impersonal.

Depending on context, it may be understood as:

• it is reported
• a report is made
• one reports
• there is a declaration/report

So even though it is grammatically passive, the practical meaning can be broader and more administrative than a plain English passive.

The sentence breaks down like this:

• Δηλώνεται ανεύρεση = A finding/recovery is reported

• υπό την προϋπόθεση ότι = provided that / on condition that

• το εντόπισε ο κάτοχος διαβατηρίου = the passport holder located it

So the overall pattern is:

main clause + formal condition phrase + subordinate clause

That is a useful structure to recognize in formal Greek.