1.
preventive measure; precaution; preventative measure
An action or plan taken in advance to prevent something undesirable from happening, such as disease, accidents, or problems.
予防策を講じる。
To take preventive measures.
感染症の予防策として手洗いが重要だ。
Hand washing is important as a preventive measure against infectious diseases.
災害が起きる前に、しっかりと予防策を立てておくべきだ。
You should establish thorough preventive measures before a disaster strikes.
Common collocations: 予防策を講じる (to take/implement preventive measures), 予防策を立てる (to establish preventive measures). The suffix ～策 (measure, plan) appears in many compound nouns: 対策 (countermeasure), 解決策 (solution), 改善策 (improvement measure). Related: 予防 (prevention), 対策 (countermeasure — reactive rather than preventive).