放大 (fàng dà) is a verb meaning 'to enlarge' or 'to zoom in', especially when increasing the size of an image, text, or visual element. The character 放 (fàng) means 'to release' or 'to set in motion', and 大 (dà) means 'big' or 'large'; together, they literally suggest 'releasing something to become larger'. This compound is commonly used in digital contexts—like adjusting display settings on phones, computers, or apps—but also appears in physical contexts such as using a magnifying glass or adjusting a projector.

It can function transitively (requiring an object, e.g., 放大图片) or intransitively with directional complements (e.g., 放大一点). While it's neutral in register and widely understood across ages, it’s rarely used for abstract concepts like 'amplifying emotions'—for those, words like 加强 or 夸大 are more appropriate. It’s distinct from similar verbs like 扩大 (which refers to expanding scope or scale, not visual size).