Describes hands-on hospital training before full qualification, like a medical internship.

Workplace Learning

Externs have restricted duties compared to fully qualified professionals, meant for learning.

Limited Responsibility

The term is most common in medical or other professional settings, less so in general speech.

In programming, 'extern' signals that certain code exists outside the current file.

'Extern' helps manage large programs by connecting pieces of code from separate files.

Using 'extern' prevents errors that occur from defining the same variable or function in multiple files.