Oldini olish (ehtiyot chorasini ko’rish)

Oldini olish (ehtiyot chorasini ko’rish) – oldindan qarshi choralar ko’rish orqali biror narsa sodir bo’lishini imkonsiz qilish. Masalan: zanglashning oldini olish, yoriqlar paydo bo’lishining oldini olish, shikastlanishning oldini olish va hokazolar.