المخدر الموضعي في خطة العلاج.

It can be either, depending on context.

• As a heading, label, or bullet point, it can simply be a phrase: local anesthetic in the treatment plan.
• In running text, it can also be read as a nominal sentence: The local anesthetic is in the treatment plan.

Arabic often allows this kind of verb-less present-tense sentence.

In Arabic, the present-tense verb to be is usually not stated.

So Arabic can say:

• المخدر الموضعي = the subject
• في خطة العلاج = the predicate

Together, they mean something like The local anesthetic is in the treatment plan, even though there is no separate word for is.

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

So:

• مخدر موضعي = a local anesthetic
• المخدر الموضعي = the local anesthetic

This is the opposite of normal English word order, where adjectives usually come before the noun.

Because the adjective must agree with the noun in definiteness.

Here:

• المخدر = the anesthetic
• الموضعي = the/local as an adjective agreeing with it

So المخدر الموضعي means the local anesthetic.

Compare:

• مخدر موضعي = a local anesthetic
• المخدر الموضعي = the local anesthetic

This agreement also applies to gender, number, and case.

This is an iḍāfa construction, often called the construct phrase.

It links two nouns together:

• خطة = plan
• العلاج = the treatment

So literally it is something like plan of the treatment, but in natural English it is usually the treatment plan.

In an iḍāfa:

• the first noun usually does not take الـ
• the second noun determines whether the whole phrase is definite or indefinite

Because العلاج is definite, خطة العلاج is definite as a whole.

Because that would not be the normal iḍāfa pattern.

In خطة العلاج, خطة is the first noun in a construct phrase, so it normally appears without الـ.

So:

• خطة العلاج = the treatment plan

If you wanted an adjective-based structure instead, Arabic would use a different form, such as:

• الخطة العلاجية = the therapeutic/treatment plan

That is a different grammatical structure from خطة العلاج.

When ة appears at the end of a word by itself, it is often pronounced like -a when you stop there.

But in خطة العلاج, the word is connected to another noun in an iḍāfa, so the ة is pronounced as -t.

So the phrase is read with a t sound between the two words, not as if خطة ended completely before العلاج.

في is a preposition meaning in.

Here it introduces the prepositional phrase في خطة العلاج, which tells you where something belongs or is included.

So grammatically, this phrase functions like the predicate in is in the treatment plan.

Yes. Normal Arabic writing usually leaves out:

• short vowels
• the shadda sign that shows consonant doubling

So المخدر is normally understood from vocabulary and context, even though the full pronunciation is not fully written out in everyday text.

This is very common in Arabic. Learners often need to know the word already, or infer the pronunciation from context.

Yes, in fully vocalized formal Arabic they would.

If this is read as a sentence:

• المخدر would be nominative because it is the subject
• الموضعي would also be nominative because it is the adjective describing that subject
• خطة would be genitive because it comes after في
• العلاج would also be genitive because it is the second noun in the iḍāfa

In ordinary writing, however, these case endings are usually not shown.