Usia

Usia is a term in Indonesian and Malay that denotes age or life span. It is used to describe how old someone is or how long something has existed.

In everyday language, usia is combined with numbers or qualifiers, as in usia 18 tahun (eighteen years old) or usia harapan hidup (life expectancy). Other common phrases include usia minimum, batas usia, and usia pernikahan. These expressions appear in legal, medical, and social contexts when discussing age-related rules or benchmarks.

In demography and statistics, usia is used to classify populations into age groups such as anak-anak (children), remaja (adolescents), dewasa (adults), and lansia (the elderly). Population data are often organized into ranges like 0–14, 15–24, 25–54, and 55+ years to analyze structure, growth, and needs across society.

The word also appears as a personal name in some communities, though it is not widely common as a given name in most languages. Outside Indonesian and Malay, usia is not a standard term in English and may appear only in translations, transliterations, or as a name.

Overall, usia is primarily a linguistic and demographic term tied to the concept of age, with practical use in everyday language, legal contexts, and population studies.