Magistra rogat utrum hoc nomen in numero singulari sit an in numero plurali.

Utrum ... an is a standard way to introduce an indirect question with two alternatives: whether ... or.

So here:

utrum hoc nomen in numero singulari sit an in numero plurali

means whether this noun is in the singular number or in the plural number.

A learner should recognize utrum as introducing the first option and an as introducing the second.

This is different from a simple pairing like aut ... aut, which means either ... or but does not normally introduce an indirect question in the same way.

Because this is an indirect question, and Latin normally uses the subjunctive in indirect questions.

The direct question would be something like:

Hoc nomen in numero singulari est an in numero plurali?
= Is this noun singular or plural?

But once that question is reported after rogat (asks), Latin changes the verb to the subjunctive:

Magistra rogat utrum hoc nomen in numero singulari sit an in numero plurali.

So sit is the present subjunctive of esse.

The subject of sit is hoc nomen.

That means the thing being described as singular or plural is this noun.

So inside the indirect question, the structure is basically:

hoc nomen ... sit
= this noun is / may be

Even though magistra is the subject of rogat, it is not the subject of sit. There are two clauses here:

• Magistra rogat = The teacher asks
• utrum hoc nomen ... sit an ... = whether this noun is ... or ...

Because nomen is a neuter singular noun.

The demonstrative hic, haec, hoc has to agree with the noun it modifies in gender, number, and case. Since nomen is neuter singular nominative here, the correct form is hoc.

So:

• masculine nominative singular: hic
• feminine nominative singular: haec
• neuter nominative singular: hoc

Since nomen is neuter, Latin uses hoc nomen.

It is nominative singular.

That is because it is the subject of sit in the indirect question.

• hoc = nominative singular neuter
• nomen = nominative singular neuter

A native English speaker may expect the object of asks here, but in Latin the whole indirect question acts as what is being asked, and within that indirect question hoc nomen is still just the subject of sit.

This is a standard Latin way of expressing grammatical number.

Literally, in numero singulari means in the singular number, and in numero plurali means in the plural number.

English usually just says singular or plural, but Latin often uses this fuller expression. It is especially common in grammatical or teaching contexts.

So the sentence is using classroom grammar language:

• numerus singularis = singular number
• numerus pluralis = plural number

Because they go with numero, and numero is ablative after the preposition in.

Here in means something like in or with respect to, and it takes the ablative.

So:

• in numero singulari
• in numero plurali

Both numero and its adjective are ablative singular:

• numero singulari
• numero plurali

The adjective must agree with the noun it modifies, so singulari and plurali match numero.

Not here. In this sentence, rogat is followed by an indirect question, and that indirect question supplies the content of what is being asked.

So:

Magistra rogat utrum ... = The teacher asks whether ...

Latin can also use rogare with a person as object, depending on the sentence, but in this example the focus is not on the person being asked. The important thing is the question itself.

Here an introduces the second alternative in a two-part question.

So in:

utrum ... sit an in numero plurali

the pattern is:

• first possibility after utrum
• second possibility after an

A useful way to read it is:

whether this noun is singular or plural

So in this context, an is functioning like or, but specifically in an alternative question structure.

Yes. Nomen can mean several related things depending on context, such as name, and in grammatical contexts it can also mean noun.

In a classroom sentence like this one, where the teacher is asking whether something is singular or plural, nomen is naturally understood in a grammatical sense.

So a learner should be aware that Latin grammar vocabulary sometimes uses ordinary words in specialized ways.

Not as much as it would be in English. Latin word order is relatively flexible because the endings show the grammatical relationships.

This sentence could be rearranged in various ways without changing the basic meaning, though some orders sound more natural than others.

The given order is clear and idiomatic:

Magistra rogat utrum hoc nomen in numero singulari sit an in numero plurali.

A learner should focus more on:

• the function of utrum ... an
• the subjunctive sit
• the agreement in hoc nomen
• the ablative phrase in numero singulari / plurali

than on trying to translate the word order directly into English.