Bijaya dashami (Sanskrit: विजयादशमी) also known as Dashahara (Sanskrit: दशहरा) or Ayudhapuja (Sanskrit: आयुधपूजा), is one of the most important Hindu festivals celebrated in various forms, across India, Nepal, Sri Lanka, and Bangladesh as well as parts ofPakistan. The name Dussehra is derived from Sanskrit. Dasha-hara literally means Dashanan ravan (the name of Ravan and in short Dasha and Hara (defeat)) referring to Lord Rama's victory over the ten-headed demon king Ravana.
The day also marks the victory of Goddess Durga over the demon Mahishasur. The name Dussehra is also derived from SanskritAhaha, which means day. For example, Aharnisha is derived from Ahaha+nisha. The Goddess fought with evils for nine nights and ten days. The name Vijayadashami is also derived from the Sanskrit words "Vijaya-dashami", literally meaning the victory on the dashami (Dashmi being the tenth lunar day of the Hindu calendar month). Diwali, the Festival of Lights, is celebrated twenty days after Dussehra.