Prior to version 1.2, Xenomite used Venipede's cry, used before its Gen VI remade cry.
Xenomite is the only Pokémon with the Nuclear type naturally to be in an evolution line.
Xenomite is based off the facehugger, the second stage of life in a xenomorph's life cycle.
Xenomite is a combination of the words xenomorph (in reference to Ridley Scott's Alien movie franchise), and mite. Xeno may also derive from the prefix "xeno-", which is generally used in taxonomic names to denote strangeness.
Xenomite may also reference cenobite (a member of a communal religious order), which may refer to the Nuclear Pokémon working in unison with each other.