Definition of perfectionation in US English:

perfectionation

noun

rare
  • The action of bringing to perfection; perfecting; the fact of being made perfect. In later use also (humorously) perfection.

Origin

Early 19th century; earliest use found in The Spirit of the Public Journals. From perfectionate + -ion; compare -ation.

Pronunciation

perfectionation

/pəˌfɛkʃəˈneɪʃn/