noun
influx
IN-fluks/ˈɪnflʌks/
An arrival or inward flow in large numbers or amounts.
The entrance receives an influx of arriving travelers.

Etymology
Literally a “flowing in,” influx first described the entry of things such as river water, air, or light. Its extension to people pictures their arrival as an incoming stream.
In context
This program, known as the Nigerianization exercise, saw the influx of many Nigerians into the military.
More examples
- A sudden influx of water flooded the chamber.
- The school prepared for an influx of new students.
- The investment caused a large influx of funds.
Forms
influx · influxes
inflow noun — movement inward
Similar words
- arrival
- Arrival is general; influx suggests a substantial inward flow.
- inflow
- Inflow is a close equivalent; influx often emphasizes a sudden or large amount.