progressionism
/prəˈɡrɛʃ(ə)nɪz(ə)m/ /prəˈɡrɛʃənɪz(ə)m/noun
Any theory involving or accounting for progress; the theory advocated by progressionists; belief in or approval of progress.
Origin
Mid 19th century; earliest use found in Alexander Beresford-Hope (1820–1887), politician and author. From progression + -ism, partly after progressionist.