supplementary
US /ˌsʌp.ləˈmen.t̬ɚ.i/
UK /ˌsʌp.ləˈmen.t̬ɚ.i/

1.
suplementar, adicional
completing or enhancing something
:
•
The teacher provided supplementary materials for the students.
O professor forneceu materiais suplementares para os alunos.
•
These notes are supplementary to the main lecture.
Essas anotações são suplementares à palestra principal.