Definition of front end
noun
1the front of a car or other vehicle.
2the part of a radio or television receiver to which the aerial signal goes first.
3 Computing a part of a computer or program that allows access to other parts.
adjective
[attributive] 1(of money) paid or charged at the beginning of a transaction:a front-end fee
2 Computing (of a device or program) directly accessed by the user and allowing access to further devices, programs, or databases.
