The grapheme N (minuscule: n) is a letter in the Czech, Slovak and Turkmen alphabets. It is formed from Latin N with the addition of hácek (cz)/mäkcen (sk) and follows plain N in the alphabet. N and n are at Unicode codepoints U+0147 and U+0148, respectively.

N (minuscule: n) is a letter formed by putting an acute accent over the letter N. In the Belarusian Lacinka alphabet, the alphabets of Polish, Kashubian, and the Sorbian languages and the romanization of Khmer it represents , which is the same as Czech and Slovak n, Serbo-Croatian nj, Spanish ñ, Italian and French gn, Hungarian ny, and Portuguese nh.

N (named en ) is the 14th letter in the modern English alphabet and the ISO basic Latin alphabet.

Ñ (lower case ñ, International Phonetic Alphabet: "énye") is a letter of the modern Latin alphabet, formed by placing a diacritical tilde on top of an N. It became part of the Spanish in the eighteenth century, when it was first formally defined. Subsequently it has been used in other alphabets, especially those influenced by the Spanish one: Galician, Asturian, Basque, old Aragonese (Grafía de Uesca de 1987), Chavacano, Filipino, Chamorro, Guarani, Quechua, Mapudungun, Mandinka, and Tetum alphabets, as well as in Latin transliteration of Tocharian and Sanskrit, where it represents . It represents in Crimean Tatar. In Breton and in Rohingya, it denotes nasalization of the preceding vowel.

A cedilla ( ; from Spanish), also known as cedilha (from Portuguese) or cédille (from French), is a hook or tail ( ) added under certain letters as a diacritical mark to modify their pronunciation. In Catalan, French, and Portuguese, it is used only under the c, and the entire letter is called respectively c trencada (i.e. "broken C"), "c cédille", and "c cedilhado" (or "c cedilha", colloquially).

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example,

In human mitochondrial genetics, haplogroup N is a human mitochondrial DNA haplogroup. An enormous haplogroup spanning many continents, the macro-haplogroup N, like its sibling haplogroup M, is a descendant of haplogroup L3.

In non-standard analysis, a hyperinteger N is a hyperreal number equal to its own integer part. A hyperinteger may be either finite or infinite. A finite hyperinteger is an ordinary integer. An example of an infinite hyperinteger is given by the class of the sequence (1,2,3,...) in the ultrapower construction of the hyperreals.

In mathematics, the intersection A n B of two sets A and B is the set that contains all elements of A that also belong to B (or equivalently, all elements of B that also belong to A), but no other elements.

Modern (, styled as .Nowoczesna), is a liberal political party in Poland founded in late May 2015 by the economist Ryszard Petru.

N is the fourteenth letter of the Latin alphabet.

N+ is the console and handheld version of the game originally made for systems powering Adobe Flash, N, which was developed by Metanet Software. N+ for Xbox Live Arcade was developed by Slick Entertainment and published by Metanet Software. Unique versions of the game were also ported separately to the PlayStation Portable and Nintendo DS  by developers SilverBirch Studios and Atari. Metanet Software licensed their N IP for this deal, provided single player level design for both versions, and consulted on the project.

N++ is a platform video game developed by Metanet Software. It is the sequel to the game N+, and was released on PlayStation 4 in North America on July 28, 2015, and July 29 in Europe. N++ was announced at Gamescom 2013 during Sony's PlayStation media briefing. The developers have suggested numerous times that if the game sells enough they will port N++ to other platforms, likely beginning with Windows and OS X.

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The italicized letter n is used in mathematics to denote an arbitrary number (usually an integer).

• n-ary associativity
• n-ary code
• n-ary group
• n-back
• n-body problem
• n-category
• n-category number
• n-connected
• n-curve
• n-dimensional space
• n-dimensional sequential move puzzle
• n-electron valence state perturbation theory (NEVPT)
• n-entity
• n-flake
• n-gram
• n-group
• n-monoid
• n-player game
• n-skeleton
• n-slit interferometer
• n-slit interferometric equation
• n-sphere
• n-vector
• n-vector model

In phonetics, a nasal release is the release of a stop consonant into a nasal. Such sounds are transcribed in the IPA with superscript nasal letters, for example as in English catnip . In English words such as sudden in which historically the tongue made separate contacts with the alveolar ridge for the /d/ and /n/, , many speakers today make only one contact. That is, the /d/ is released directly into the /n/: . Although this is a minor phonetic detail in English (in fact, it is commonly transcribed as having no audible release: , ), nasal release is more important in some other languages.

In mathematics, the natural numbers are those used for counting (as in "there are six coins on the table") and ordering (as in "this is the third largest city in the country"). In common language, words used for counting are "cardinal numbers" and words used for ordering are "ordinal numbers".

In computing, a newline, also known as a line ending, end of line (EOL), or line break, is a special character or sequence of characters signifying the end of a line of text and the start of a new line. The actual codes representing a newline vary across operating systems, which can be a problem when exchanging text files between systems with different newline representations.

In the English language, the word "nigger" is an ethnic slur, usually directed at black people. The word originated as a neutral term referring to people with black skin, as a variation of the Spanish and Portuguese noun negro, a descendant of the Latin adjective ("black"). It was often used disparagingly, and by the mid-twentieth century, particularly in the United States, its usage became unambiguously pejorative, a racist insult. Accordingly, it began to disappear from popular culture, and its continued inclusion in classic works of literature has sparked controversy.

Shift Out (SO) and Shift In (SI) are ASCII control characters 14 and 15, respectively (0x0E and 0x0F.) These are sometimes also called "Control-N" and "Control-O".

A thumbs-up or thumbs-down is a common hand gesture achieved by a closed fist held with the thumb extended upward or downward in approval or disapproval, respectively. These gestures have become metaphors in English: "The audience gave the movie the thumbs-up" means that the audience approved of the movie, regardless of whether the gesture was actually made.

The velar nasal is a type of consonantal sound, used in some spoken languages. It is the sound of ng in English sing. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is N. The IPA symbol is similar to , the symbol for the retroflex nasal, which has a rightward-pointing hook extending from the bottom of the right stem, and to , the symbol for the palatal nasal, which has a leftward-pointing hook extending from the bottom of the left stem. Both the IPA symbol and the sound are commonly called 'eng' or 'engma'.