Besides something or beside something means in addition to it . I think she has many good qualities besides being very beautiful. There was only one person besides Ford who knew Julia Jameson. Besides is also an adverb. Besides definition: moreover; furthermore; also.. See examples of BESIDES used in a sentence. Beside is a preposition meaning “next to” (e.g., “Sit beside me”) or “compared to” (e.g., “My project seems amateur beside yours”). Besides is a preposition meaning “ in addition to ” or “other than” (e.g., “I have many goals besides graduating”). The meaning of BESIDES is other than, except. How to use besides in a sentence.