There are 3 main definitions of n in English:

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n 1

Syllabification: n

abbreviation

1.1 [in combination] (In units of measurement) nano- (109): the plates were coated with 500 ng of protein in sodium carbonate buffer
1.2Born.
[From Latin nātus]
1.4Net.
1.5 Grammar Neuter.
1.6New.
1.8Noon.
1.9 (n-) [in combination] Chemistry Normal (denoting straight-chain hydrocarbons): n-hexane
1.10North or northern.
1.11Note (used in a book’s index to refer to a footnote): 450n
1.12 Finance Note.
1.13 Grammar Noun.
1.14Number.

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An unspecified or variable number: at the limit where n equals infinity See also nth.

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There are 3 main definitions of n in English:

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N 2 Syllabification: N
(also n)

noun (plural Ns or N's)

1The fourteenth letter of the alphabet. See also en.
1.1Denoting the next after M in a set of items, categories, etc.

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There are 3 main definitions of n in English:

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N 3 Syllabification: N

abbreviation

1(Used in recording moves in chess) knight: 17.Na4?
[N represents knight, since the initial letter k- represents 'king']
1.2(On a gear lever) neutral.
1.4 Physics Newton(s).
1.5Noon.
1.6 Chemistry (With reference to solutions) normal: the pH was adjusted to 7.0 with 1 N HCl
1.7Norse.
1.8North or Northern: 78° N N Ireland
1.9 Finance Note.
1.10Nuclear: the N bomb

symbol

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The chemical element nitrogen.

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