combination

noun

• 1a joining or merging of different parts or qualities in which the component elements are individually distinct:a magnificent combination of drama, dance, and music the combination of recession and falling property values proved fatal to the business community this colour combination is stunningly effective
• [mass noun] the process of combining different parts or qualities or the state of being combined:these four factors work together in combination
• a particular arrangement of different elements:the canvases may be arranged in any number of combinations
• (in sport) a coordinated and effective sequence of moves:a good uppercut/hook combination
• [as modifier] denoting an object or process that unites different uses, functions, or ingredients:combination remedies contain painkiller, decongestant, and cough soother
• [mass noun] Chemistry the joining of substances in a compound with new properties.

• 2a sequence of numbers or letters used to open a combination lock: underneath the picture is a safe: the combination is 210319

• 3British a motorcycle with a sidecar attached.

• 4 (combinations) British dated a single undergarment covering the body and legs: woollen combinations

• 5 Mathematics a selection of a given number of elements from a larger number without regard to their arrangement.