Definition of pansexualist in English:

pansexualist

adjective

  • Pansexual.

noun

  • A believer in or advocate of pansexualism or pansexuality; a pansexual person.

Origin

1920s; earliest use found in William McDougall (1871–1938), psychologist. From pan- + sexual [noun] + -ist, after pansexualism. Compare French pansexualiste, adjective.