1) Combinative 2) Combinatory 3) Integrative 
Any system using a random assortment of components at any positions in the linear arrangement of atoms, i.e., a combinatorial library of mutations could contain positions where all four bases have been randomly inserted. ... (05 Mar 2000) ... 
Type: Term Pronunciation: kom′bin-ă-tor′ē-ăl Definitions: 1. Describes any system using a random assortment of components at any positions in the linear arrangement of atoms; a combinatorial library of mutations could contain positions where all four bases have been randomly inserted.
[adj] - (mathematics) relating to the combination and arrangement of elements in sets
adjective relating to the combination and arrangement of elements in sets
of, pertaining to, or involving the combination of elements, as in phonetics or music. · of or pertaining to the enumeration of the number of ways of doing some specific task or of arranging items in a specific configuration. · of or pertaining to combination, or the modes, properties, etc., of combinations.