防范 means 'to guard against' or 'prevention'—it emphasizes proactive measures taken to avoid harm, danger, or unwanted outcomes. The first character 防 (fáng) means 'to guard' or 'to defend', while 范 (fàn) here functions as a bound morpheme meaning 'model' or 'standard', but in this compound it contributes the sense of 'setting boundaries' or 'establishing protective norms'. Together, 防范 implies systematic, conscious effort—not just reacting to threats, but anticipating and blocking them before they occur.

This word is commonly used in formal or official contexts: public health campaigns (e.g., preventing disease spread), cybersecurity, crime prevention, and workplace safety. It often appears with verbs like 加强 (strengthen), 做好 (do well), or 采取措施 (take measures). While it can function as a noun ('prevention'), it’s more frequently used as a verb in phrases like 防范措施 (preventive measures) or 防范意识 (awareness of prevention).