modular
Pronunciation: /ˈmɒdjʊlə/
adjective
- 1employing or involving a module or modules as the basis of design or construction: modular housing units
- relating to an educational course designed as a series of independent units of study that can be combined in a number of ways: moves to make all Britain’s vocational qualifications modular modular courses coupled with practical experience

Origin:
late 18th century: from modern Latin modularis, from Latin modulus (see modulus)