This is the 13620th most frequent Turkish word.
kurtaran
"Savior" or "rescuer."
Here, 'kurtaran' describes the hero and their action of saving humanity as an attribute linked to them.
Bu hikaye, insanlığı kurtaran bir kahramanın öyküsünü anlatıyor.
This story tells the tale of a hero who saved humanity.
The word 'kurtaran' here acts as a participle, describing the person (the captain) who performed the action of saving.
Kaptan, gemiyi batmaktan kurtaran kişiydi.
The captain was the person who saved the ship from sinking.
In this case, 'kurtaran' is used as a descriptor for the type of action (saving) performed in the surgery.