This document provides 5 examples of Latinisms, or words derived from Latin, that are still used in Spanish. The Latinisms discussed are: 1) In situ, meaning "at the site, on the site"; 2) Alias, meaning "nickname"; 3) Acuario, referring to an aquarium; 4) Honoris causa, meaning a title granted by a university for honorary reasons; and 5) Dúplex, meaning "double".