Sanskrit is called “Samskrutam” in, well, Sanskrit. “Suskriyate Anena Iti Samskrutam”- that which has been purified is Sanskrit – is one of the definitions of Sanskrit or Samskrutam.
Just like Yoga improves/purifies our bodies, Sanskrit purifies our speech. In fact, some of the advanced yogic breathing techniques (kriyas) are in-built into Sanskrit so that just by speaking the language, we are automatically practising Yoga.
“Samyak Krutam Samskrutam” – “that which is well-done” is the other definition of Samskrutam.