This document summarizes the origins and meanings of common Latin and Greek roots found in English words. It discusses roots relating to water (hydra, aqua, aqu, mar, mer), seeing (vis, vid), hearing (aud), sound (phon), memory (mem), study (ology), knowledge (sci), circle (cycl), around (circ/circum), middle (centr/center), say/declare (dict), write (scrib/script), and write/draw/describe/record (graph/gram). The document was created by Eric and Josh as a reference for Latin word roots.