thirtieth

/θˈɜːti‍əθ/

/ˈθɝtiəθ/, /ˈθɝtiɪθ/

thirtieth

coming or happening right after the twenty-ninth person or thing

synonyms : 30th

Thirtieth

position 30 in a countable series of things

Examples

1. And on my thirtieth birthday, I made that turn mentally.

2. It's supposed to take 18 thirtieths of a second.

3. Still, it's they're one thirtieth of corn ethanol.

4. Isabella was only six years of age, while Richard was nearing his thirtieth year.