'Zàodiǎn' (noise point) is a compound noun formed from 噪 (zào, 'noise' or 'disturbance') and 点 (diǎn, 'point' or 'spot'). In digital imaging and photography, it refers to random visual artifacts—such as grainy specks or color distortions—that appear in images due to sensor limitations, high ISO settings, or poor lighting. These artifacts degrade image clarity and are especially noticeable in shadows or uniform areas like skies.

In informal or internet contexts, 噪点 extends metaphorically to mean a 'rumor hotspot'—a person, platform, or situation that repeatedly generates or amplifies unfounded information or sensationalized claims. Unlike factual reporting, a 噪点 contributes more noise than signal, often distorting public understanding. The term carries a mildly critical connotation, implying lack of reliability or excessive emotional reactivity.