Word Study
nth
WORDNET DICTIONARY
Adjective nth has 1 sense
- nth(s = adj.all) n-th - last or greatest in an indefinitely large series; "to the nth degree"
CIDE DICTIONARY
nth, adj.
Last or greatest in an indefinitely large series; as, to the nth degree. [WordNet 1.5]
For further exploring for "nth" in Webster Dictionary Online