IPA: /ˌʌnˈfɜː.tɪ.laɪzd/
KK: /ʌnˈfɜr.tɪ.laɪzd/
Not having been made fertile or enriched, often referring to eggs or soil that have not received fertilization.
The unfertilized egg will not develop into a chick.
Unfertilized → It is formed from "un-" (meaning not) and "fertilized" (from Latin "fertilis", meaning fruitful or productive). The word "unfertilized" means not made fruitful or not capable of producing offspring.
Think of 'not' ('un-') being added to 'fruitful' ('fertilis') — that's why unfertilized means not capable of producing offspring.