interpolation
US /ɪnˌtɝː.pəˈleɪ.ʃən/
UK /ɪnˌtɝː.pəˈleɪ.ʃən/
1.
phép nội suy
the addition of something different in the middle of a text, piece of music, etc. or the thing that is added:
:
•
An actor reads the poems in English translation, with brief musical interpolations.