1. A subject matter or subject area that is not required but may be chosen by a student, participant, or reader for study or discussion
In this course, students can choose one optional topic for their final project.
Neste curso, os alunos podem escolher um tópico opcional para seu projeto final.
2. In academic or professional settings, a theme or subject that is supplementary and not mandatory
The seminar offers several optional topics to complement the core curriculum.
O seminário oferece vários tópicos opcionais para complementar o currículo principal.