Definition of Extropianism in US English:

Extropianism

noun

  • The philosophy of extropians; the belief that cultural and technological development tends to oppose, and will overcome, entropy.

Origin

1990s; earliest use found in Extropy. From extropian + -ism, perhaps after utopianism.

Pronunciation

Extropianism

/ɛksˈtrəʊpɪənɪz(ə)m/