मृत्यु शब्द नही बल्कि, हिन्दू धर्म के महाभारत ग्रंथ के अनुसार, मृत्यु एक परम पवित्र मंगलकारी देवी है। सामान्य भाषा मे किसी भी जीवात्मा अर्थात प्राणी के जीवन के अन्त को मृत्यु कहते हैं। लालच, मोह,रोग,कुपोषण के परिणामस्वरूप होती है। मुख्यतया मृत्यु के 101 स्वरूप होते है, लेकिन मुख्य 8 प्रकार की होती है। जिसमे बुढ़ापा, रोग, दुर्घटना, अकस्मती आघात, शोक,चिंता, ओर लालच मृत्यु के मुख्य रूप है।

Death is the end of life; the irreversible cessation of all biological functions that sustain a living organism. The remains of a former organism normally begin to decompose shortly after death. Death eventually and inevitably occurs in all organisms. Some organisms, such as Turritopsis dohrnii, are biologically immortal, however they can still die from means other than aging. Death is generally applied to whole organisms; the equivalent for individual components of an organism, such as cells or tissues, is necrosis. Something that is not considered an organism, such as a virus, can be physically destroyed but is not said to die, as a virus is not considered alive in the first place.