O prazo de entrega termina na sexta-feira.

Prazo usually means a deadline, time limit, or allowed period of time. In prazo de entrega, it refers to the delivery deadline or delivery time frame.

It is a little broader than just a calendar date. For example:

• data de entrega = delivery date
• prazo de entrega = delivery deadline / delivery time limit

Portuguese often uses the definite article o / a in places where English might leave it out.

So o prazo means the deadline, referring to a specific deadline that speaker and listener both know about.

Without the article, prazo can sound more like a label, dictionary form, or a very general statement. In a normal full sentence, o prazo is the natural choice.

De entrega is a noun phrase that specifies what kind of deadline we are talking about.

Portuguese often uses:

• noun + de + noun

So:

• prazo = deadline / time limit
• prazo de entrega = delivery deadline

This structure is very common:

• prazo de pagamento = payment deadline
• data de entrega = delivery date
• horário de trabalho = work schedule

Termina comes from terminar, meaning to end or to finish.

In Portuguese, it is natural to say that a deadline ends on a certain day:

• O prazo termina na sexta-feira.

This is similar to English The deadline ends on Friday.

Other verbs are also possible, depending on context:

• acaba = ends / comes to an end
• vence = is due / expires

For deadlines, bills, and official due dates, vence is also very common:

• O prazo vence na sexta-feira.

Portuguese often uses the simple present to talk about scheduled or fixed future events, just like English does.

So:

• O prazo termina na sexta-feira.

can naturally refer to something happening in the future.

This is normal and common. You could also say:

• O prazo vai terminar na sexta-feira.

But the simple present sounds very natural here.

Na is a contraction of:

• em + a = na

So na sexta-feira literally combines on/in the Friday.

In Brazilian Portuguese, days of the week are often used with the article in this kind of sentence. That is why na sexta-feira sounds natural.

Compare:

• na segunda-feira
• na terça-feira
• na sexta-feira

Yes. Sexta-feira is feminine because the main noun is feira, which is feminine.

That is why the contraction is:

• em + a sexta-feira = na sexta-feira

If the noun were masculine, you would get no instead of na:

• em + o = no

The full names of weekdays in Portuguese are written with a hyphen:

• segunda-feira
• terça-feira
• quarta-feira
• quinta-feira
• sexta-feira

So the hyphen in sexta-feira is standard spelling.

Yes. In everyday Brazilian Portuguese, na sexta is very common and sounds natural.

So both are possible:

• O prazo termina na sexta-feira. = full form, neutral/standard
• O prazo termina na sexta. = shorter, more conversational

Not exactly.

• data de entrega = the delivery date
• prazo de entrega = the deadline or time limit for delivery

Sometimes they may point to the same practical moment, but the meaning is slightly different. Data focuses on the date itself; prazo focuses on the limit or deadline.

Sometimes yes, but the nuance is a little different.

• prazo de entrega = delivery deadline / delivery time frame
• prazo para entrega = time allowed for delivery / deadline to deliver something

In many contexts they are close, but prazo de entrega is the more common fixed expression.

The most neutral word order is:

• O prazo de entrega termina na sexta-feira.

Portuguese usually likes this order:

• subject + verb + time expression

You can move the time expression for emphasis:

• Na sexta-feira, o prazo de entrega termina.

That is grammatically correct, but it sounds more marked or emphatic. The original sentence is the most natural neutral version.

A rough pronunciation guide is:

oo PRAH-zoo djee en-TREH-gah tehr-MEE-nah nah SEHKS-tah-FAY-rah

A few useful notes:

• prazo: stress on pra
• entrega: stress on tre
• termina: stress on mi
• sexta-feira: main stress on fei

In many Brazilian accents, de entrega sounds closer to dji entrega in connected speech.