Hola Graham

It appears there might be a slight misspelling in your query. If you meant "momia" (mummy), the infinitive form is "momificar" (to mummify). "Momificar" refers to the process of preserving a body as a mummy.

If you had a different term in mind or if there's a specific context you're referring to, please provide additional details so I can offer more accurate assistance.

Saludos

Silvia