المجمد مغلق.

A careful MSA reading is:

al-mujammidu mughlaqun

In pause, which is how people often actually say it, it becomes closer to:

al-mujammid mughlaq

A few pronunciation notes:

• الـ = al-
• ج is usually taught in MSA as j like in jam
• مُجَمِّد has a doubled m sound because of the shadda
• غ in مغلق is a deep throaty sound, somewhat like a French r
• ق is a deep q sound, not the same as English k

So a practical learner-friendly pronunciation is:

al-mu-jam-mid mugh-laq

Because Arabic normally leaves out is/are in the present tense.

So:

• المجمد مغلق = The freezer is closed

There is no separate present-tense word for is here.

If you wanted was, Arabic would usually use كان:

• كان المجمد مغلقًا = The freezer was closed

This is very normal in Arabic and is one of the first big differences English speakers notice.

This is a nominal sentence in Arabic, called جملة اسمية.

It has two parts:

• المجمد = the topic/subject (مبتدأ)
• مغلق = the predicate/information about the subject (خبر)

So the structure is:

the freezer + closed

Literally: The freezer [is] closed.

Because here مغلق is the predicate, not part of a noun phrase.

So:

• المجمد مغلق = The freezer is closed

But if you say:

• المجمد المغلق

that usually means:

• the closed freezer

So the presence or absence of الـ helps show the difference between:

• a full sentence
• a noun + adjective phrase

This is a very important pattern in Arabic.

It is functioning like an adjective, meaning closed.

More precisely, it is a passive participle from the verb أغلق (to close).

So:

• أغلق = to close
• مغلق = closed

Arabic often uses participles like this to describe a state:

• الباب مفتوح = The door is open
• المحل مغلق = The shop is closed

So مغلق is not a finite verb like closed in He closed the door. Here it is a descriptive word: closed.

Because in Arabic, descriptive words normally come after the noun they describe.

But in this sentence, there is an extra point:

• المجمد مغلق is not just a noun with an adjective
• it is a whole sentence: The freezer is closed

Arabic often builds this kind of sentence as:

noun + predicate

So for an English speaker, it may look like noun + adjective, and that is partly true, but grammatically it is a complete sentence.

The fully vowelled form is:

الْمُجَمِّدُ مُغْلَقٌ

With case endings:

• الْمُجَمِّدُ = nominative
• مُغْلَقٌ = nominative

Why nominative on both?

Because in a basic nominal sentence, both the subject and the predicate are normally in the nominative.

In everyday Arabic writing, these short vowels are usually not written, so you usually just see:

المجمد مغلق

Usually, in everyday speech and most normal reading, no.

So although the full grammatical form is:

الْمُجَمِّدُ مُغْلَقٌ

many speakers would simply say:

المجمد مغلق

roughly:

al-mujammid mughlaq

This is especially true at the end of a pause, where final short vowels are often not pronounced.

So it is good to learn the full form, but very normal to hear or say it without full case endings in less formal situations.

الـ is the Arabic definite article, meaning the.

So:

• مجمد = a freezer / freezer
• المجمد = the freezer

In this sentence, the noun is definite:

• المجمد = the freezer

That is why the whole sentence means:

The freezer is closed

not just A freezer is closed.

Yes. When a predicate like this describes a noun, it normally agrees with it in gender and number.

Here المجمد is masculine singular, so the predicate is also masculine singular:

• المجمد مغلق

If the noun were feminine, the predicate would change too:

• الثلاجة مغلقة = The refrigerator is closed

So this is a good sentence for noticing agreement.

Yes, and this is a useful advanced observation.

Because Arabic usually leaves out short vowels, المجمد can be ambiguous on the page.

It could represent different vowelings, such as:

• المُجَمِّد = the freezer
• المُجَمَّد = the frozen thing / the frozen one

In this sentence, based on the intended meaning, it is understood as:

الْمُجَمِّد = the freezer

This kind of ambiguity is normal in unvowelled Arabic, and context usually solves it.