transhumanism is the expansion and extension and then transendence of human capability. Robot arms. Lab grown organs. Cancer vaccines. Boob jobs.
If it allows a human to express their genuine self, become more effective, or become something greater than "standard" human, it can be considered transhumanist. As soon as something limits human potential, captures and cages human spirit, and is used against the labor class, it is Not Transhumanist.