O resto está na mesa.

O resto usually means the rest, the remainder, or what’s left.

In O resto está na mesa, it refers to whatever remains of something already understood from context, such as:

• the rest of the food
• the remaining items
• what is left over

So resto is a noun here, not a verb.

O is the masculine singular definite article, meaning the.

Portuguese normally uses articles more often than English does, so o resto is the natural way to say the rest.

Without o, the phrase would usually sound incomplete or unnatural in this context.

Portuguese has two main verbs for to be: ser and estar.

Here, está is used because the sentence gives a location:

• O resto está na mesa. = The rest is on the table.

In Portuguese, location is normally expressed with estar, not ser.

So:

• está na mesa = is on the table

Na is a contraction of:

• em = in / on / at
• a = the

So:

• em + a = na

Because mesa is feminine, you use a mesa, and that makes em a mesa become na mesa.

So na mesa means on the table here.

In Portuguese, em is broader than English in. It can mean in, on, or at, depending on the context.

So:

• na mesa = on the table
• na caixa = in the box
• na escola = at school

You choose the English translation based on the situation, but Portuguese often keeps em.

Because mesa is a feminine noun in Portuguese:

• a mesa
• na mesa

Grammatical gender in Portuguese is part of the noun itself and does not always follow any logical rule from English. A table is not “female” in a real-world sense; mesa is just grammatically feminine.

That gender affects the article and contractions:

• a mesa
• na mesa

The accent mark in está shows the stressed syllable and helps distinguish it from other words.

• está = is
• esta = this (feminine)

So the accent is important both for pronunciation and meaning.

In está, the stress falls on the final syllable:

• es-TÁ

A common Brazilian Portuguese pronunciation is approximately:

oo HESH-too es-TAH na MEH-zah

A more accurate IPA-style version is roughly:

[u ˈʁɛstu isˈta na ˈmezɐ]

A few useful notes:

• o at the beginning is often pronounced like a short u sound in Brazil.
• r in resto is often pronounced with a throaty h-like sound in many Brazilian accents.
• s in mesa sounds like z because it is between vowels.

The normal, neutral word order is:

O resto está na mesa.

That is:

• subject: o resto
• verb: está
• place: na mesa

You can sometimes change the order in Portuguese for emphasis, but this version is the most natural and standard for a basic statement.

Yes. Resto can mean several related things, including:

• the rest
• the remainder
• leftovers
• change or small remaining amount, depending on context

Examples:

• O resto do dinheiro = the rest of the money
• O resto da comida = the rest of the food
• o resto by itself = the rest / what’s left

In your sentence, the exact meaning depends on what was being talked about before.