The Atlontic?
According to
10 Words Coined in the Sci-Fi Universe,
"When
clone first entered English in 1903, it was used in the context of botany. It comes from the Greek
klon meaning 'a twig' and is related to
klados meaning 'offshoot of a plant.' Later,
clone took on the sci-fi sense of 'artificially duplicated person' thanks to Alvin Toffler's 1970 book
Future Shock. While ethics have deterred the real-life cloning of people, in the 1980s, scientists started seriously discussing cloning animals, and in 1996 the first mammal clone was created in the form of a sheep named Dolly."