English
eventology
From event + -ology.
Formed from event + -ology
Proto-Indo-European *gʷem- ‘to come’
…
Latin veniō ‘come’
Latin ēveniō ‘to happen’
Latin ēventus ‘an event’
Middle French event
English event
Today it means
noun The branch of statistics that deals with random, vague events
Language periods are conventional ranges, not dates for this word.
Etymograph / eventology