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I usually take it to mean full time equivalent...

It usually means either 25 full time employees, or a number of part time and full time staff that equal the paid hours of 25 full time employees.

e.g. 50 part time employees that work half the typical working week would be 25 fte

Full-time employee, I presume.

Yes, FTE means Full Time Emoloyee

Not exactly, it's "Full Time Equivalent". If two employees are working half-time, together they make up 1 FTE, but not 1 full time employee (because there are two of them).

It's full-time employee in this context, but if you ever need to search for an acronym definition again in the future try

https://www.acronymfinder.com/FTE.html

;-)

In my line of work, its full time engineers.