IPA: /ˌpriːpjuːˈbɛsəns/
KK: /priˈpjubəsəns/
The period in a person's life just before they reach puberty, when their body begins to develop and change.
Children experience various changes during prepubescence as they approach adolescence.
Prepubescence → It is formed from "pre-" (meaning before) and "pubescere" (from Latin, meaning to reach puberty). The word refers to the stage of development that occurs before the onset of puberty.
Think of 'pre-' meaning before and 'pubescence' relating to puberty — prepubescence is the stage before reaching puberty.