How to Say "intern" in Spanish
The Spanish word for “intern” is “interno” — B1 level. This is a very common word in everyday Spanish.

Examples
El interno de cirugía trabaja 60 horas a la semana.
The surgical intern (or resident) works 60 hours a week.
Todos los internos del colegio deben seguir las reglas estrictamente.
All the boarders at the school must follow the rules strictly.
Mañana le preguntaré al interno sobre mis resultados.
Tomorrow I will ask the resident about my results.
Using the Feminine Form
When referring to a female person who is an intern or resident, the word changes to 'la interna'.
Confusing 'Interno' with 'Becario'
Mistake: “Using 'interno' for a general office intern or trainee who doesn't live at the workplace.”
Correction: For standard office trainees or unpaid apprenticeships, 'becario' or 'pasante' is usually better. 'Interno' often implies living within the institution (like a hospital or boarding school).
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