Eski çıkarım yeni kayıtla çürütüldü.

new

Breakdown of Eski çıkarım yeni kayıtla çürütüldü.

• eski: old
• kayıt: the record
• çıkarım: the inference

Questions & Answers about Eski çıkarım yeni kayıtla çürütüldü.

Why is çürütüldü at the end of the sentence?

Because Turkish normally puts the finite verb at the end in a neutral sentence.

So the structure here is roughly:

• Eski çıkarım = the old inference
• yeni kayıtla = with / by means of the new record
• çürütüldü = was refuted

This verb-final order is very common in Turkish. Other word orders are possible, but they usually change the emphasis.

Why is eski çıkarım not marked with an accusative ending?

Because this sentence is passive.

In an active sentence, eski çıkarım would be the direct object, and if it is definite, it would usually take the accusative:

• Yeni kayıt eski çıkarımı çürüttü.
  The new record refuted the old inference.

In your sentence, the object of that active sentence has become the subject of the passive sentence:

• Eski çıkarım yeni kayıtla çürütüldü.

So it appears in the basic, unmarked form: çıkarım, not çıkarımı.

How is çürütüldü built?

Çürütüldü can be broken down like this:

• çürüt- = refute, disprove
• -ül- = passive
• -dü = past tense

So:

• çürütmek = to refute
• çürütülmek = to be refuted
• çürütüldü = was refuted

The vowels change according to vowel harmony, which is why you see ü in both suffixes here.