Grosimea este importantă.

Grosime means thickness in the indefinite form.

Grosimea means the thickness, with the definite article attached to the end of the noun. Romanian usually puts the definite article after the noun, not before it as English does.

• grosime = thickness
• grosimea = the thickness

In sentences about general ideas or abstract qualities, Romanian often uses the definite form where English would just use a bare noun. So Grosimea este importantă is a very natural way to say Thickness is important.

That is a basic feature of Romanian grammar. Romanian has a postposed definite article, meaning the article is added to the end of the noun.

For feminine singular nouns like grosime, the definite article is often -a, but the exact form depends on the noun type.

So:

• grosime → grosimea

This is different from English, where you would say the thickness with a separate word.

Because importantă agrees with grosimea, and grosimea is a feminine singular noun.

In Romanian, adjectives usually agree with the noun in:

• gender
• number
• sometimes case

So here:

• grosimea = feminine singular
• importantă = feminine singular form of important

Compare:

• masculine/neuter singular: important
• feminine singular: importantă
• masculine plural: importanți
• feminine/neuter plural: importante

Este means is. It is the 3rd person singular form of the verb a fi (to be).

So the structure is:

• Grosimea = the thickness
• este = is
• importantă = important

Romanian often uses este exactly where English uses is.

Yes. E is a very common short form of este in everyday Romanian.

So both are correct:

• Grosimea este importantă. — a bit more neutral or careful
• Grosimea e importantă. — very common in speech

The meaning is the same.

It comes from the adjective gros, which means thick (or sometimes fat, depending on context).

A common Romanian noun-forming ending is -ime, which can create abstract nouns showing a quality or measure.

So:

• gros = thick
• grosime = thickness
• grosimea = the thickness

This is useful because many Romanian abstract nouns are built in similar ways.

A simple learner-friendly pronunciation guide would be:

gro-si-MEA ES-te im-por-TAN-tuh

A few notes:

• mea in grosimea is stressed
• este has stress on the first syllable
• importantă has stress on tan
• the final ă is the Romanian schwa sound, like the a in English sofa

If you want it a bit more exactly:

• grosimea ≈ gro-si-MEA
• este ≈ ES-te
• importantă ≈ im-por-TAN-tuh

The final ă is part of the feminine singular adjective ending.

Compare:

• important = masculine/neuter singular
• importantă = feminine singular

Since grosimea is feminine singular, the adjective must match it:

• Grosimea este importantă.

This ă is very common in Romanian feminine forms.

Yes, Romanian word order is somewhat flexible, but the most neutral order here is:

• Grosimea este importantă.

You could also say:

• Importantă este grosimea.

That version sounds more marked or emphatic, something like It is the thickness that is important.

So learners should usually stick with Grosimea este importantă unless they want special emphasis.

No, that sounds unnatural.

If you want to express the general idea Thickness is important, Romanian normally prefers the definite form:

• Grosimea este importantă.

Using grosime without the article in this sentence is not the normal choice.

So this is a good example of a place where Romanian grammar does not match English word-for-word.

Not always. Grammatically, grosimea is definitely the definite form, so literally it is the thickness.

But in actual translation, English often sounds more natural without the, especially in general statements:

• Grosimea este importantă. → Thickness is important.

So when translating from Romanian, you should think about what sounds natural in English, not just translate each word mechanically.