点燃 literally means 'to light' or 'to ignite', combining 点 (diǎn, 'to touch, to point, to light') and 燃 (rán, 'to burn'). While it can refer to physically lighting something like a candle, firecracker, or campfire, it’s also widely used metaphorically — especially in written and formal speech — to describe sparking an emotion, idea, or movement. For example, a powerful speech might 点燃 enthusiasm or hope in listeners.

The verb is transitive and typically requires a direct object (e.g., 点燃蜡烛, 点燃激情). It carries a slightly literary or elevated tone, making it common in news reports, essays, speeches, and literature — less frequent in casual daily talk, where simpler verbs like 点 (to light) or 着 (to catch fire) may be preferred. It does not take aspect particles like 了 or 过 as freely as colloquial verbs; context often implies completion.