'influx' originates from Latin, specifically the word 'influxus,' where 'in-' meant 'into' and 'fluere' meant 'to flow.'

'influxus' transformed into the French word 'influx,' and eventually became the modern English word 'influx' through Middle English.

Initially, it meant 'to flow into,' but over time it evolved into its current meaning of 'the arrival or entry of a large number of people or things.'