Глоссарий добавили, с тем чтобы носитель языка согласовал терминологию.

This is a very common Russian pattern: 3rd person plural past is often used when the doer is unknown, unimportant, or deliberately left unnamed.

So Глоссарий добавили literally looks like They added the glossary, but in natural English it often corresponds to:

• A glossary was added
• They added a glossary
• Someone added a glossary

This is called an indefinite-personal construction. Russian often prefers this over a passive.

Because глоссарий is the direct object of добавили.

The verb добавить takes the accusative case:

• добавить что? → глоссарий

For masculine inanimate nouns in the singular, the accusative often looks the same as the nominative:

• nominative: глоссарий
• accusative: глоссарий

So the form is accusative here, even though it looks identical to nominative.

С тем чтобы is a fairly formal way to express purpose. It means:

• so that
• in order that
• for the purpose of

So:

• Глоссарий добавили, с тем чтобы...
  = A glossary was added so that...

In less formal Russian, you will often just see чтобы:

• Глоссарий добавили, чтобы носитель языка согласовал терминологию.

That version is more everyday and means essentially the same thing.

Not especially. It is correct, but it sounds more formal, written, or bureaucratic/editorial.

You are more likely to hear:

• чтобы
• sometimes для того чтобы

So the style here is somewhat formal:

• с тем чтобы = formal/written
• для того чтобы = neutral to formal
• чтобы = most common and natural in everyday use

Because с тем чтобы introduces a subordinate clause of purpose.

The clause is:

• с тем чтобы носитель языка согласовал терминологию

Russian normally separates this kind of clause with a comma.

Main clause:

• Глоссарий добавили

Purpose clause:

• с тем чтобы носитель языка согласовал терминологию

So the comma is standard.

Literally, носитель языка means carrier/bearer of the language. This is the normal Russian expression for native speaker.

Structure:

• носитель = bearer, carrier
• языка = of the language

So:

• носитель языка = native speaker

This is a set expression, and you should learn it as a whole.

Because носитель commonly takes a dependent noun in the genitive to mean bearer/carrier of something.

So:

• носитель чего? → языка

This is similar to English speaker of a language, though the wording is different.

Examples:

• носитель языка = native speaker
• носитель информации = information carrier / medium

Согласовал is the perfective past tense of согласовать.
It suggests a completed result: the terminology gets brought into agreement, approved, aligned, or standardized.

That fits very well after a purpose expression like so that:

• the glossary was added so that the native speaker would finalize / align / approve the terminology

If you used согласовывал instead, that would be imperfective, which would emphasize an ongoing process or repeated action, and it would sound less natural here.

So the perfective is used because the sentence points to a goal with a result.

Because its subject is носитель языка, which is:

• singular
• grammatically masculine

In the past tense, Russian verbs agree with the subject in gender and number:

• он согласовал
• она согласовала
• они согласовали

Here the subject is носитель, so we get согласовал.

It means something like:

• to standardize the terminology
• to harmonize the terminology
• to align the terminology
• to approve/finalize the terminology

The exact English translation depends on context.

The basic idea is that the terminology is being made consistent or being checked and approved so that the terms match properly.

So in this sentence, the native speaker is expected to review the terms and make sure the terminology is acceptable and internally consistent.

Because it is the direct object of согласовал.

• согласовать что? → терминологию

The dictionary form is:

• терминология (nominative)

The accusative singular is:

• терминологию

This is a regular feminine noun pattern:

• -ия in nominative singular
• -ию in accusative singular

Yes. Russian could use a passive construction, for example:

• Глоссарий был добавлен, чтобы носитель языка согласовал терминологию.

But Russian often prefers the more compact active-looking indefinite-personal version:

• Глоссарий добавили...

Both are grammatical, but the original sounds quite natural in Russian, especially in administrative or editorial contexts.

The word order is natural, but not completely fixed.

The original order:

• Глоссарий добавили, с тем чтобы носитель языка согласовал терминологию.

This puts the focus first on the action taken: the glossary was added.

You could also say:

• С тем чтобы носитель языка согласовал терминологию, добавили глоссарий.

That sounds more marked and emphasizes the purpose first.

So the original order is the most straightforward and natural for written Russian.

Because Russian has no articles like a, an, or the.

Whether something is understood as a glossary or the glossary, a native speaker or the native speaker, depends on context.

So:

• Глоссарий добавили could mean A glossary was added or The glossary was added
• носитель языка could mean a native speaker or the native speaker

English must choose; Russian usually does not mark this explicitly.

In normal usage, носитель языка specifically means a native speaker, not just someone who speaks the language well.

If you want to say simply speaker of the language, Russian would use other wording, depending on context.

So in this sentence, the implication is that the terminology should be checked by someone who is a native speaker.