The term 'list-dividing punctuation mark' refers to a punctuation mark used to separate items in a list. The most common example of this is the COMMA (5 letters). Commas are used to separate items in a list, such as in a grocery list or a list of instructions. They can also be used to separate two independent clauses in a sentence. Commas are an important part of written language and are used to make sentences easier to read and understand.