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adjective

nth

ENTH
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Nth (adjective) means occurring at position n in a numbered sequence, in mathematics. Example: “The formula gives the nth term of the sequence.”

adjective
1
formal Occurring at position n in a numbered sequence, in mathematics.
"The formula gives the nth term of the sequence."
"Each student calculated the nth value in the series."
2
informal Occurring at some large but unspecified point in a series, used informally.
"This is the nth time he's forgotten his keys."
"For the nth time, I told her the meeting had moved."
"It felt like the nth attempt at fixing the same problem."

How to use nth

Learner’s notes

In plain EnglishA way of saying 'however many' when the exact number doesn't matter or isn't known.

When to use it

The mathematical sense is formal and technical, while 'for the nth time' is common in everyday informal speech.

Memory tip

Say it as one syllable, 'enth', not as separate letters n-t-h.

Trace the full origin ↓
Common pairings
the nth term for the nth time to the nth degree
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Fill the gap

Can you complete this real example?

The formula gives the _____ term of the sequence.

Etymology

Nth is formed from the letter n, used in mathematics to stand for an unspecified number, combined with the ordinal ending -th, as in fourth or fifth.

Origin: English

Rhymes for nth

See all rhymes for nth →

Frequently asked questions

What does nth mean?
In mathematics it means occurring at an unspecified position, n, in a sequence; informally it means happening after a large, unstated number of times.
What does 'for the nth time' mean?
It means something has happened so many times the exact count no longer matters.
Is nth a real mathematical term?
Yes, it's a standard way to refer to the term at position n in a numbered sequence.
What is the meaning of nth?
"nth" (adjective) means occurring at position n in a numbered sequence, in mathematics.