The word "xenogenesis" comes from the Greek word "xeno-" meaning "foreign", "strange". or "guest", along with the Latin word "genesis", meaning "origin" or "birth".  Its etymology literally means "foreign origin" or "strange origin" and describes the imaginary production of an organism entirely different from its parent. 

sAccording to the Oxford English Dictionary (OED), the word "xenogenesis" was first used in English in the 1870s, with the earliest evidence being from 1870 in the writing of Thomas Huxley.=, a biologist and science educator. 

Examples of "xenogenesis" in a sentence: 
"Scientists study xenogenesis to understand genetic variations." 
"Xenogenesis challenges traditional inheritance theories." 
"Xenogenesis is a fascinating concept in science fiction." 
"The book explores xenogenesis as a theme."