Termin zwrotu jest jutro.

Literally, termin zwrotu means deadline/date of return or return deadline.

• termin = deadline, due date, appointed time
• zwrotu = of return

So the structure is basically:

• termin
  • zwrotu
• deadline
  • of return

In natural English, you would usually say the return deadline or the due date for returning it.

Because Polish does not have articles like a and the.

So Termin zwrotu jest jutro can mean:

• The return deadline is tomorrow
• A return deadline is tomorrow

In real context, the intended meaning is usually clear without an article.

Because zwrotu is the genitive singular form of zwrot.

After a noun like termin, Polish often uses another noun in the genitive to show a relationship like of in English.

So:

• termin zwrotu = deadline of return
• termin spotkania = time/date of the meeting
• termin egzaminu = date of the exam

This is a very common Polish pattern: noun + genitive noun.

Termin is in the nominative singular, because it is the subject of the sentence.

The basic structure is:

• Termin zwrotu = the subject
• jest = is
• jutro = tomorrow

So termin is the thing being talked about: the deadline.

In a normal full sentence, yes, jest is the standard form.

• Termin zwrotu jest jutro = full, neutral sentence

You may sometimes see jest omitted in very informal notes, schedules, headlines, or reminders, for example:

• Termin zwrotu: jutro

But in standard spoken or written Polish, jest is the normal choice.

Jutro is an adverb meaning tomorrow.

It does not change form for case, gender, or number. So unlike many Polish nouns, it stays the same.

In this sentence, it tells you when the deadline is.

Compare:

• Dzisiaj = today
• jutro = tomorrow
• pojutrze = the day after tomorrow

Yes. Polish word order is more flexible than English word order.

The neutral version here is:

• Termin zwrotu jest jutro.

But you could also say:

• Jutro jest termin zwrotu.
• Termin zwrotu jutro jest. — grammatically possible, but unusual
• Jutro termin zwrotu. — possible in note-style language

Different word orders can shift emphasis. For example:

• Termin zwrotu jest jutro. = neutral statement
• Jutro jest termin zwrotu. = puts more focus on tomorrow

Even though Polish allows more flexibility, not every possible order sounds equally natural.

Not exactly.

• termin usually means deadline, appointed time, or due date
• data usually means a calendar date

So:

• termin zwrotu = due date / return deadline
• data zwrotu = date of return

If you are talking about something that must be returned by a certain time, termin is often the better word.

No. Zwrot has several meanings in Polish, depending on context.

Common ones include:

• return of an item
• refund
• a phrase/expression in language
• a turn/change in a situation

In termin zwrotu, the context strongly suggests returning something, such as a library book, rental item, borrowed object, or product.

Yes, it is understandable and acceptable. But depending on the situation, native speakers might also say other things.

For example:

• Termin zwrotu jest jutro. = The return deadline is tomorrow.
• Termin zwrotu mija jutro. = The return deadline expires tomorrow.
• Zwrot jest na jutro. = The return is due tomorrow.
• Masz termin zwrotu na jutro. = Your return deadline is tomorrow / You have to return it by tomorrow.

So your sentence works, but there are other common ways to express the same idea, sometimes with slightly different nuance.

A simple pronunciation guide is:

• Termin → TEHR-meen
• zwrotu → roughly ZVROH-too
• jest → yest
• jutro → YOO-troh

A few useful notes:

• rz in zwrotu sounds like the Polish sound written ż
• j in Polish sounds like English y
• stress in Polish is usually on the second-to-last syllable

So the sentence is stressed approximately like this:

• ter-MIN zwro-TU jest JU-tro

Not very naturally.

A word-for-word version would be something like:

• deadline of return is tomorrow

That is understandable, but not normal English. Natural English would be:

• The return deadline is tomorrow
• The due date is tomorrow
• It is due back tomorrow

This is a good example of how Polish often uses noun + genitive noun, where English often prefers an adjective-like noun phrase or a different construction.