A editora publicou uma edição simples, com letras grandes.

A is the feminine singular definite article, meaning the.

So:

• a editora = the publisher / the publishing house
• uma edição = a/an edition

In this sentence, a editora refers to a specific publisher already known from context, while uma edição introduces one edition as new information.

Portuguese uses articles very often, sometimes more often than English does.

It can depend on context.

In this sentence, editora most naturally means publishing house / publisher — the company that published the edition.

That is because of the verb publicou (published), which fits very naturally with a publishing company.

A learner should know that:

• editor = editor / publisher (masculine form, depending on context)
• editora = female editor or publishing house / publisher

So context is what tells you the exact meaning.

Because they are feminine nouns:

• a editora
• a edição

This is why they use feminine articles:

• a
• uma

The two words are related in meaning, but not because of grammar rules that force them to be feminine together. Each noun simply has its own grammatical gender.

Also notice:

• editora ends in -a, which is often feminine
• edição ends in -ão, and nouns ending in -ão can be masculine or feminine, so you have to learn the gender individually

Publicou is the pretérito perfeito do indicativo in Portuguese.

It is the 3rd person singular form of publicar:

• eu publiquei
• tu publicaste
• ele/ela/você publicou

Here it means published in the sense of a completed past action:

• A editora publicou... = The publisher published...

This tense is commonly used for finished actions in the past.

Because simples is an adjective with the same form for masculine and feminine singular.

So you get:

• um livro simples
• uma edição simples

And in the plural:

• livros simples
• edições simples

So simples does not change to simplesa or simpla. Its form stays simples.

Because letras is plural, so the adjective must also be plural.

• letra grande = big letter
• letras grandes = big letters

Here, grande changes only for number:

• singular: grande
• plural: grandes

It does not change between masculine and feminine in the singular:

• livro grande
• letra grande

Literally, it means with big letters or with large letters.

In natural English, depending on context, you might also say:

• in large print
• with large print

So the structure is:

• com = with
• letras = letters
• grandes = large / big

Portuguese often expresses this idea more literally as large letters.

So:

• com letras grandes = with large letters
• in natural English: in large print

This is a good example of how Portuguese and English may express the same idea differently even when the meaning is straightforward.

Com is a preposition meaning with.

In this sentence, com letras grandes describes a feature of the edition:

• uma edição simples = a simple edition
• com letras grandes = with large letters

So the full noun phrase is describing the kind of edition that was published.

The comma separates an extra descriptive element.

• A editora publicou uma edição simples com letras grandes.
• A editora publicou uma edição simples, com letras grandes.

Both can be understandable, but the comma gives a slight pause and makes com letras grandes feel like added descriptive information.

In writing, this can be a stylistic choice. Without the comma, the phrase feels more tightly attached to edição simples. With the comma, it feels a little more like an additional detail.

Yes, it could.

A editora publicou uma edição simples com letras grandes.

That version is also natural and may even feel more direct. The meaning does not change much: the edition is simple and has large letters.

So the comma here is more about style and rhythm than about a major grammar change.

Because of meaning and structure.

The phrase com letras grandes naturally describes the edition, not the act of publishing. An edition can have large letters; publishing itself cannot.

So the understood meaning is:

• The publisher published a simple edition that had large letters.

This is very common in Portuguese: a prepositional phrase like com + noun often adds information to the noun phrase before it.

The plural is edições.

So:

• singular: a edição
• plural: as edições

This is a useful pattern to learn:

• words ending in -ção usually form the plural in -ções

Examples:

• edição → edições
• informação → informações
• tradução → traduções

It can mean several things depending on context:

• simple
• plain
• basic
• uncomplicated

In uma edição simples, it often suggests a plain/basic edition, not a deluxe or special one.

So it may describe something modest in presentation rather than something easy to understand.

Yes, very possibly.

In context, com letras grandes can suggest a format that is easier to read, for example for people with reduced vision or for readers who prefer larger print.

So although the literal meaning is with large letters, the practical idea may be large-print edition.

In European Portuguese, edição is roughly pronounced like:

eh-dee-SOUNG

A few important points for learners:

• the stress is on the last syllable: -ção
• ção has a nasal sound
• the final -o sound of English is not there; it is the nasal -ão pattern

A more careful approximation is something like eh-di-SÃWNG, but exact nasal sounds take practice.

The word order is quite normal for Portuguese:

• A editora = subject
• publicou = verb
• uma edição simples = direct object
• com letras grandes = descriptive phrase

So the sentence follows a very common pattern:

Subject + Verb + Object + Extra description

That makes it a good model sentence for beginners and intermediate learners.

Not very naturally in this sentence.

The best translations here are:

• the publisher
• the publishing house

If you say editor, English usually makes people think of a person who edits text, not the company that publishes a book.

So for this sentence, publisher is the safest choice.