Visualize is a 19th-century formation from visual (from Late Latin visualis, from Latin visus 'sight', from videre 'to see') plus the verb-forming suffix -ize. In current use it is a verb meaning "to form a mental image of something; to make visible". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The surface form is compositional: its joined elements remain visible in the modern word. The historical chain includes Latin visualis, Latin visus, and Latin videre. Related English forms include visual, vision, and visionary. Derived forms include visualization, visualizer, and visualizable. The word's history is thus visible in its construction: the components remain interpretable even after the whole expression has settled into a conventional English meaning.