18
US /ˌeɪˈtiːn/
UK /ˌeɪˈtiːn/

1.
dieciocho
the number equivalent to the sum of twelve and six; one more than 17, or nine less than 27; 18
:
•
She turned 18 last month.
Ella cumplió 18 el mes pasado.
•
There are 18 students in the class.
Hay 18 estudiantes en la clase.