SMCLN. /ˌsɛmɪˈkəʊlən,ˌsɛmɪˈkəʊlɒn/ noun 1. A punctuation mark (;) indicating a pause, typically between two main clauses, that is more pronounced than that indicated by a comma. 2. A semicolon is used when an author could have chosen to end their sentence, but chose not to. You are the author of your story. – the-smcln.com