combination . ( Of the lat. )( combinatio, - onis ). 1. f. action and effect of combined or combined. 2. f. Union of two things in a same subject. 3. f. drink consisting of several liquors, especially Vermouth and Geneva. 4. f. set of ordered signs in certain way, who only know one or more people, and are used to open or operate certain mechanisms or devices, such as safes, ATMs, etc. 5 f. renewal or reorganization of political office. 6. f. In dictionaries, set or added words that start with a same letters and are placed in alphabetical order; e.g., those beginning with ab, BA's, by ca, etc. 7. f. garment that the women wear underwear and under the dress. 8. f. Mat. Each of the subsets of a given number of elements in a given finite set, which differ in at least one element; e.g. abc, agc, bcd, acd.