zukan de siraberu.

図鑑 (ずかん) means an illustrated reference book, often something like a picture encyclopedia or field guide.

It is commonly used for categories such as:

• animals
• plants
• insects
• fish
• stars

It is not the usual word for dictionary, which is 辞書.
It is also not library, which is 図書館.

So in this sentence, field guide or illustrated reference book is the best way to think about 図鑑.

Here, で marks the means or tool used to do the action.

So:

• 図鑑で = using a field guide
• 図鑑で調べる = to look something up using a field guide

A natural English shortcut is with or by using.

調べる (しらべる) is a very common verb meaning things like:

• to check
• to look up
• to investigate
• to examine

In this sentence, the most natural meaning is to look something up or to check something in a reference source.

So even though 調べる can be broad, here it has the sense of checking information.

Japanese often leaves out information that is understood from context.

So even though 調べる usually has an object, that object does not have to be said every time.

For example, a fuller sentence might be:

• 図鑑で鳥の名前を調べる。
• Look up a bird’s name in a field guide.

In 図鑑で調べる。, the thing being checked is simply omitted because the speaker assumes it is already clear.

Yes, it can be.

Japanese often omits the subject and object when they are obvious. So this can work as a complete sentence meaning something like:

• I look it up in a field guide
• I’ll look it up in a field guide
• Someone checks it in a field guide

However, by itself it is a little context-dependent, because Japanese relies heavily on shared context.

調べる is the plain non-past form.

In Japanese, the non-past can mean:

• present / habitual: someone regularly checks things in a field guide
• future: someone will check something in a field guide

The exact time is decided by context.

If you wanted a polite version, you would say:

• 図鑑で調べます。

Because Japanese normally puts the main verb at the end.

So the structure here is:

• 図鑑で = using a field guide
• 調べる = look up / check

This is standard Japanese word order. English usually puts the verb earlier, but Japanese often saves it until the end.

It is pronounced:

ずかん で しらべる
zukan de shiraberu

Word by word:

• 図鑑 = ずかん
• で = で
• 調べる = しらべる

The particle changes the meaning a lot.

• 図鑑で調べる = use the field guide as a tool/reference
• 図鑑を調べる = examine or search the field guide itself

So if you mean look something up by using a field guide, then で is the correct particle.