noun
Refers to the early years of life, typically from birth to around age 6 or 7. Often used in formal or written contexts.
幼年期の経験は人格形成に大きな影響を与える。
Experiences in early childhood greatly influence personality development.
彼は幼年時代を田舎で過ごし
He spent his childhood in the countryside.
Compound of 幼 (young, infant) and 年 (year, age). The exact historical derivation is uncertain, but the combination naturally conveys the concept of early years.