in the PONS Dictionary
I. nine·ti·eth [ˈnaɪntiəθ, Am -t̬-] N
1. ninetieth (after 89th):
- ninetieth
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2. ninetieth (fraction):
- ninetieth
- Neunzigstel nt
II. nine·ti·eth [ˈnaɪntiəθ, Am -t̬-] ADJ
- ninetieth
-
- ninetieth birthday
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III. nine·ti·eth [ˈnaɪntiəθ, Am -t̬-] ADV
- ninetieth
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Examples from the PONS Dictionary (editorially verified)
- ninetieth birthday