combinatorial

• POS: Adjective
• HYPHEN: com=bi=na=to=ri=al

CIDE DICTIONARY

combinatorial, adj. 

•  able to combine; tending to combine.

  "same as combinative, 2."  [WordNet 1.5]
•  of or relating to combinations.  [WordNet 1.5]
•  produced by a process of combining; as, a combinatorial explosion of possibilities; -- used especially in reference to mathematical or statistical processes of computing possible combinations.  [PJC]

OXFORD DICTIONARY

combinatorial, adj. Math. relating to combinations of items.

ROGET THESAURUS

combinatorial

Interchange

N interchange, exchange, commutation, permutation, intermutation, reciprocation, transposition, rearrangement, shuffling, alternation, reciprocity, castling (at chess), hocus-pocus, interchangeableness, interchangeability, recombination, combination, barter, tit for tat, cross fire, battledore and shuttlecock, quid pro quo, interchanged, reciprocal, mutual, commutative, interchangeable, intercurrent, combinatorial, recombinant, in exchange, vice versa, mutatis mutandis, backwards and forwards, by turns, turn and turn about, each in his turn, everyone in his turn.