Cartesian product

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A set of all pairs of elements (x, y) that can be constructed from given sets, X and Y, such that x belongs to X and y to Y.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun set theory The set of all possible pairs of elements whose components are members of two sets. Notation: .
• noun databases All possible combinations of rows between all of the tables listed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the set of elements common to two or more sets