Η όπτηση προκαλεί συρρίκνωση.

No. In Greek, Η is the capital form of η, not the English letter H.

Here, Η is the definite article meaning the for a feminine singular noun:

• Η όπτηση = the firing / the baking / the roasting (depending on context)

It is pronounced ee, not aitch.

Η is the feminine singular definite article, equivalent to the in English.

It agrees with όπτηση, which is a feminine noun:

• η όπτηση = the firing
• η συρρίκνωση = the shrinkage

In this sentence, only the first noun has the article, because Greek does not always repeat articles in the same way English would.

Because Greek nouns have grammatical gender. A noun can be masculine, feminine, or neuter, and this is a grammar feature, not usually a statement about biological sex.

Both of these nouns are feminine:

• η όπτηση
• η συρρίκνωση

That affects:

• the article used
• adjective agreement
• sometimes pronoun agreement

So here, they are feminine simply because that is how these nouns are categorized in Greek.

Because προκαλεί is third person singular present tense of προκαλώ (to cause).

So:

• προκαλώ = I cause
• προκαλείς = you cause
• προκαλεί = he/she/it causes

The subject here is Η όπτηση (the firing), which is singular, so the verb is also singular:

• Η όπτηση προκαλεί = The firing causes

Greek does not have an indefinite article exactly like English a/an in all cases.

A bare noun often works where English would use:

• a
• an
• or no article at all

So συρρίκνωση can mean:

• shrinkage
• a shrinkage
  depending on context

In technical or general statements, Greek often leaves the noun without an article:

• Η όπτηση προκαλεί συρρίκνωση.
• literally: The firing causes shrinkage.

That sounds natural in Greek.

In this sentence:

• Η όπτηση = the subject
• συρρίκνωση = the object

You can tell from several clues:

1. The article

   • Η όπτηση is clearly a noun phrase with the definite article, making it a natural subject.

2. The verb form

   • προκαλεί is singular, matching όπτηση.

3. Meaning

   • Semantically, firing is something that can cause something.
   • shrinkage is the thing being caused.

4. Word order

   • Greek word order is flexible, but subject + verb + object is very common, especially in straightforward statements like this one.

Also, with many feminine nouns, the nominative and accusative singular forms look the same, so context is often important.

• Η όπτηση is in the nominative, because it is the subject.
• συρρίκνωση is in the accusative, because it is the direct object of προκαλεί.

A useful thing to know is that for many feminine nouns, especially ones like these, the noun form itself may look the same in nominative and accusative singular:

• η όπτηση / την όπτηση
• η συρρίκνωση / τη(ν) συρρίκνωση

So the article often makes the case clearer than the noun ending does.

A rough pronunciation guide:

• όπτηση = OP-ti-see
• προκαλεί = pro-ka-LEE
• συρρίκνωση = seer-REEK-no-see

More carefully:

• ό = stressed o
• η / ι / υ usually sound like ee
• ει also sounds like ee

So the whole sentence is approximately:

ee OP-ti-see pro-ka-LEE seer-REEK-no-see

The accent marks show which syllable is stressed.

In this sentence:

• όπτηση → stress on the first syllable
• προκαλεί → stress on the last syllable
• συρρίκνωση → stress on the second syllable

This is important because stress in Greek is a regular part of the word’s spelling and pronunciation.

For example:

• προκαλει would be misspelled
• προκαλεί is correct

So the accents are not optional decoration; they are part of standard written Greek.

Yes, it sounds somewhat technical or scientific.

The nouns όπτηση and συρρίκνωση are common in fields such as:

• ceramics
• materials science
• manufacturing
• engineering

In everyday conversation, a speaker might choose less technical wording depending on the context. But in a textbook, manual, lab description, or scientific explanation, this sentence sounds very natural.

Yes. Greek word order is more flexible than English word order because case marking and verb forms help show the relationships between words.

The neutral, straightforward order here is:

• Η όπτηση προκαλεί συρρίκνωση.

But Greek can move words around for emphasis or style. For example, a speaker might front συρρίκνωση to emphasize the result.

Still, for learners, this sentence is a good example of the most transparent pattern:

• subject + verb + object

So this is the safest and clearest order to imitate at first.