Quam magna est machina scaenica!

Here quam means how in an exclamation: how big! or how great!

So quam magna means how big. It is not the same as quam meaning than or whom/which in other contexts.

In this form, it is an exclamation, not a real information-seeking question. The exclamation mark shows surprise or admiration: How big the stage machine is!

Latin often uses quam + adjective for this kind of exclamation.

Because magna agrees with machina.

Machina is:

• feminine
• singular
• nominative

So the adjective must match it:

• magnus = masculine
• magna = feminine
• magnum = neuter

Since machina is feminine, Latin uses magna.

It is nominative singular.

Machina scaenica is the subject of est, so it must be in the nominative.
Also, scaenica matches machina in gender, number, and case, so it is nominative singular feminine too.

Scaenica is an adjective modifying machina.

So:

• machina = machine
• scaenica = stage / theatrical

Together, machina scaenica means something like stage machine or theatrical machine.

Because Latin adjective position is more flexible than English. An adjective can come before or after the noun.

So machina scaenica is perfectly normal Latin. Putting the adjective after the noun often sounds natural and can feel slightly more descriptive or classifying, though word order in Latin is often a matter of style and emphasis.

Latin word order is much freer than English word order.

English usually wants subject + verb + complement, but Latin can move words around to emphasize different parts. Here quam magna comes first for emphasis, so the sentence highlights the exclamation: How big...!

Because Latin has no articles. It does not have separate words for the, a, or an.

So machina scaenica could mean:

• the stage machine
• a stage machine

The exact sense depends on context.

Yes. Magnus, magna, magnum can mean big, but it can also mean great, large, or even important, depending on context.

So quam magna could sometimes be understood as how great as well as how big. The context tells you which English word fits best.

Yes. That is a very natural English translation.

Latin uses quam + adjective here, but English often prefers what a ... ! for the same feeling. So both of these work well:

• How big the stage machine is!
• What a big stage machine!

In a classical-style pronunciation, you could say it roughly like this:

• Quam = kwahm
• magna = MAHG-na
• est = ehst
• machina = MA-ki-na
• scaenica = SKAI-ni-ka

The important beginner points are:

• qu sounds like kw
• ch in classical Latin is usually a hard k sound
• ae is a diphthong, roughly like ai in aisle