Deparazitarea începe azi.

Deparazitarea is a noun, not a finite verb. More specifically, it is a verbal noun formed from a deparazita (to deworm / to remove parasites / to treat for parasites).

In this sentence, it is the subject of the verb începe:

• Deparazitarea = the deworming / the parasite treatment
• începe = starts / begins

So the sentence structure is basically:

• Deparazitarea = subject
• începe = verb
• azi = time adverb

That final -a is the definite article.

Romanian usually puts the at the end of the noun instead of before it.

Compare:

• deparazitare = deworming / parasite treatment
• deparazitarea = the deworming / the parasite treatment

So English says:

• the deworming

but Romanian says:

• deparazitarea

This is a very common Romanian pattern.

Because the sentence is talking about a specific, identifiable procedure.

Deparazitarea începe azi sounds like:

• The deworming starts today
• The parasite treatment starts today

In context, this is probably a treatment that has already been planned or mentioned.

Using the indefinite form deparazitare here would usually sound unnatural or incomplete in normal usage.

Începe is the 3rd person singular present tense of a începe (to begin / to start).

Why 3rd person singular?

Because the subject, deparazitarea, is singular.

So:

• a începe = to begin
• începe = begins / starts

This is the same kind of form you would also use with:

• El începe = He starts
• Ea începe = She starts
• Programul începe = The program starts

Because Romanian does not need one here.

Începe by itself already means:

• starts
• begins

And depending on context, it can also correspond to English phrases like:

• is starting
• does start

So Romanian often expresses in one verb form what English might express with extra words.

That means Deparazitarea începe azi is a complete sentence without any extra helper verb.

Grammatically, it is present tense.

But in meaning, it can easily refer to a scheduled event beginning today, which is very similar to English:

• The treatment starts today

So it is present in form, but often has a near-future / scheduled feel in context.

That is completely normal in both Romanian and English.

Yes. Both mean today.

• azi = today
• astăzi = today

Azi is shorter and very common in everyday speech. Astăzi is also completely standard and may sound a little fuller or slightly more formal depending on context, but the difference is small.

So you could also say:

• Deparazitarea începe astăzi.

Yes. Romanian word order is more flexible than English word order.

The version you have:

• Deparazitarea începe azi.

is a very neutral way to say it.

But you could also say:

• Azi începe deparazitarea.

That version puts more emphasis on azi (today).

Both are natural. The difference is mostly about focus and style, not basic meaning.

Not always.

It can mean deworming in many veterinary or medical contexts, especially when internal parasites are meant. But more generally, it can also mean parasite treatment or removal of parasites.

So the most natural English translation depends on context:

• pets, livestock, routine treatment: often deworming
• broader parasite-related context: parasite treatment

A rough pronunciation is:

• începe ≈ uhn-CHE-pe

A few notes:

• î is a Romanian vowel that does not have an exact English equivalent.
• ce sounds like che in check.
• The final -pe is pronounced clearly, not reduced like an unstressed English vowel.

So the middle of the word is definitely a ch sound, not an s or k sound.

No.

English often needs a pronoun in places where Romanian does not. But in this sentence, the subject is already stated clearly:

• Deparazitarea = the deworming / the treatment

So there is no need for a separate pronoun like it.

Romanian also often leaves out subject pronouns when the verb form already makes the meaning clear, but here the subject noun is explicitly present anyway.