English · Numbers & Time
eighteen
/ˌeɪˈtiːn/
[/ˌeɪˈtiːn/]
the number 18
Beginnernumeral
Definition
The number 18.
Example
At eighteen, many young people are legally considered adults.
At eighteen, many young people are legally considered adults.
Etymology
From Old English "eahtatiene," eight plus ten.
How & Where It’s Used
Eighteen often marks legal adulthood in many countries.