To become thickened or to cause to thicken, especially with reference to milk.

गाढ़ा होना

English Usage: The milk began curdling when left out too long.

Hindi Usage: दूध बहुत देर तक बाहर रहने पर गाढ़ा होने लगा।

A thickened or coagulated substance typically related to dairy products.

दूध का ठोस रूप

English Usage: The curdling of milk is necessary for making cheese.

Hindi Usage: पनीर बनाने के लिए दूध का ठोस रूप बनाना आवश्यक है।