Svara Sandhi is a linguistic concept in Sanskrit that refers to the rules governing the combination of vowel sounds at the junction of words or syllables. It plays a crucial role in the pronunciation and meaning of words, ensuring fluidity and harmony in speech. When two vowels meet, Svara Sandhi dictates how they interact, which can result in changes to their sounds or the formation of new sounds. This process is essential for maintaining the rhythm and meter in Sanskrit poetry and prose, enhancing the overall aesthetic of the language.