combināˈtion noun

1. The act of combining
2. Union, joining of individual things
3. Chemical union, forming a new compound
4. A motorcycle with sidecar (also called motorcycle combination)
5. A group of people united for a purpose
6. In mathematics, a possible set of a given number of things selected from a given number, irrespective of arrangement within the set (distinguished from a permutation)
7. The series of letters or numbers that must be dialled to open a combination lock

combināˈtional adjective

combināˈtions plural noun (informal short form coms or combs /komz/)

A warm undergarment covering the whole body with long sleeves and legs

comˈbinātive adjective

combinatoˈrial adjective (mathematics)

Concerned with arrangements, combinations and permutations

combinatorˈics singular noun (mathematics)

The branch of mathematics concerned with the theory and function of combinations and permutations

combinˈatory adjective

combīnedˈ adjective

combīnˈing adjective

combo /komˈbō/ noun (pl comˈbos)

1. A small jazz- or dance band
2. Any combination (informal)
3. A white man who cohabits with an Aboriginal woman (Aust)

combination lock noun

A lock used on safes, suitcases, etc, with numbered dials which must be turned in a special order a certain number of times, or to a certain number or numbers, to open it

combination oven noun

An oven that functions both as a microwave and as a conventional oven (informal short form combi)

combination room noun

At Cambridge University, a common room

combination therapy noun (medicine)

Treatment of a single form of cancer or other disease with more than one drug

combined operations plural noun (military)

Operations in which army, navy and air force work together

combine harvester noun (agriculture)

A combined harvesting and threshing machine

combining form noun

A linguistic element that is only used as part of a composite word