xenochemistry

xeno- +‎ chemistry

xenochemistry (uncountable)

1. (rare, science fiction) The study of extraterrestrial chemistry.
   • 2012, Norman M. Wereley, Janet M. Sater, Plants and Mechanical Motion: A Synthetic Approach to Nastic Materials and Structures:

     The engineering scale shows “simple copy” at the biological “system or structure” level down to “xenochemistry of engineered systems” at the “molecular level.”