18yearold
18yearold is an informal, concatenated label used in digital contexts to denote an individual who is eighteen years old. It is not a formal term in law or scholarship, but it is widely recognized in online profiles, usernames, file names, and search queries as a compact way to indicate age. The form 18yearold often appears in contexts where hyphenation or spacing is avoided for technical or coding reasons, though standard English would usually render it as 18-year-old when written in prose.
Legal significance and context vary by jurisdiction. In many countries, the age of eighteen marks the age
Usage and privacy considerations. The label 18yearold can appear in demographic data, market research, or discussions