The term 'hyphen' is a punctuation mark used to join two words together. It is also known as a JOINT or DASH, and is represented by the symbols '-', '(-)' or '–'. Hyphens are used to create compound words, such as 'mother-in-law' or 'well-being'. They are also used to separate syllables of a single word, such as 're-enter' or 'pre-heat'. Hyphens can also be used to indicate a range of numbers, such as 'pages 5-7'.