A mummy is a deceased human or animal whose skin and organs have been preserved by either intentional or accidental
exposure to chemicals, extreme
cold, very low humidity, or lack
of air, so that the recovered body will not decay further if kept in cool and
dry conditions. Some authorities restrict the use of the term to bodies
deliberately embalmed with chemicals, but the use of the word to
cover accidentally desiccated bodies goes back to at least 1615 CE. (See
the section Etymology and meaning.)