Mass. Gen. Laws ch. 33, § 137A
(a) For the purposes of this section the following words shall, unless the context clearly requires otherwise, have the following meanings:
''Availability of seats'', vacancies that exist in a course after the enrollment of all tuition-paying students and all students who are enrolled under any scholarship or tuition waiver provisions.
''Dependents'', immediate family members of a member who are enrolled in the Defense Enrollment Eligibility Reporting System in connection with the member.
''Member'', a Massachusetts army or air national guard member eligible pursuant to subsection (d).
(c)