The story
- French · borrowed fromtrans-humain
- English todaytranshuman
From trans- + human, also attested as trans-human in the 1950s. Attributed to Teilhard de Chardin, as French trans-humain (noun, sometimes capitalised as (le) Trans-humain), who used it alongside ultra-humain (“the ultra-human”). As a countable English noun (plural transhumans) introduced by F. M. Esfandiary in the 1960s (here trans- is short for transitional).
Etymology from Wiktionary, CC BY-SA 4.0.