An adherent or advocate of, or an activist for, extropy or extropianism and its goals or principles.
2001?, Rob Lightner, Amazon review of Cyborg Citizen: Politics in the Posthuman Age by Chris Hables Gray:Though Hables Gray does go out of his way to remind the reader that nearly all of us are bio-enhanced (that is a vaccination scar, isn’t it?), he’s neither a chrome-eyed Extropian nor a Rifkinesque fear-mongerer.
