open question
noun1
A type of question that cannot be answered with a simple yes or no and requires a longer, more detailed response.
- Thus an open question is one that permits a broad range of responses, while a closed question usually calls for a single-word response such as "yes" or "no" or a number.2001, Belainesh Araya, Counseling in an Eritrean Context, page 181:
2
Human sciences, Philosophy, Sciences A question whose answer is not fixed by the definition of the terms contained within it.
3
Synonym of open problem.