A procuração chegou hoje.

A is the feminine singular definite article, meaning the.

So a procuração = the power of attorney.

Portuguese nouns have grammatical gender, and procuração is feminine, so it takes a, not o.

Grammatical gender in Portuguese is a property of the noun, not of the object itself.

Procuração is a feminine noun, which is why you say:

• a procuração
• esta procuração
• a procuração chegou

Many nouns ending in -ção are feminine, so this fits a very common pattern.

Chegou is the simple past of chegar and corresponds to arrived in English.

So:

• A procuração chegou hoje. = The power of attorney arrived today.

This tense is very commonly used in Brazilian Portuguese for completed past actions.

Because chegar here is being used normally as an intransitive verb meaning to arrive. No extra pronoun is needed.

The subject is a procuração, and the verb agrees with it in the third person singular:

• A procuração chegou. = The power of attorney arrived.

There is no reflexive meaning here.

Portuguese often does not need a separate subject pronoun when the subject noun is already stated.

Here, a procuração is the subject, so that is enough:

• A procuração chegou hoje.

Adding a pronoun would be unnecessary.

Yes. Hoje is flexible in Portuguese.

All of these are possible, though they may sound slightly different in emphasis:

• A procuração chegou hoje.
• Hoje a procuração chegou.
• A procuração hoje chegou. (less common in everyday speech)
• Chegou hoje a procuração. (more marked, often stylistic or contextual)

The most neutral everyday version is A procuração chegou hoje.

Mostly yes. This sentence follows a very common Portuguese order:

subject + verb + time expression

• A procuração = subject
• chegou = verb
• hoje = time expression

So structurally it is very similar to The power of attorney arrived today.

In Brazilian Portuguese, it is approximately:

pro-cu-ra-ÇÃO

The last syllable is stressed: -ção.

A rough English-style approximation is proh-koo-rah-SOWN, but that is only approximate.

A few pronunciation notes:

• ç sounds like s
• ão is a nasal sound, very common in Portuguese
• the stress falls on the last syllable because of the ending -ão

It usually means a power of attorney, a legal document giving someone authority to act on another person’s behalf.

It is a fairly formal or legal word, not something used in very casual conversation every day unless you are talking about legal, business, or administrative matters.

Normally, no. In standard Portuguese, countable singular nouns like this usually need an article or another determiner when they are specific.

So the natural sentence is:

• A procuração chegou hoje.

Without the article, it sounds incomplete in most normal contexts.

You would make both the noun phrase and the verb plural:

• As procurações chegaram hoje.

Changes:

• a → as
• procuração → procurações
• chegou → chegaram

This is standard subject-verb agreement in Portuguese.