The preserving of a dead body, by making it into a mummy.(noun)
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Use "mummification" in a sentence
"Scientists acknowledge that most natural mummification is produced in the absence of water and in the presence of soil that is salty, or rich in nitrates and aluminum."
"The practice of self-mummification, which is a form of suicide after all, had to be outlawed to prevent Buddhist priests from offing themselves this way."
"Mummies of the World will feature natural mummification, which is when a body was accidentally put through the process."