English · Numbers & Time
thirty
/ˈθɜːti/
[/ˈθɜːti/]
the number 30
Beginnernumeral
Definition
The number 30.
Example
There are about thirty days in most months of the year.
There are about thirty days in most months of the year.
Etymology
From Old English "thritig," three tens.
How & Where It’s Used
A common round number, often used for ages and quantities.