№ Белгісі: «Сан» сөзінің типографиялық қысқартпасы

Typographic abbreviation of the word "number(s)"

The numero sign or numero symbol, № (also represented as Nº, No̱, No. or no. ), is a typographic abbreviation of the word number(s) indicating ordinal numeration, especially in names and titles. For example, using the numero sign, the written long form of the address is shortened to , yet both forms are spoken long. Typographically, the numero sign combines as a single ligature the uppercase Latin letter with a usually superscript lowercase letter , sometimes underlined, resembling the masculine ordinal indicator The ligature has a code point in Unicode as a precomposed character,
The Oxford English Dictionary derives the numero sign from Latin numero, the ablative form of numerus ("number", with the ablative denotations of "by the number, with the number"). In Romance languages, the numero sign is understood as an abbreviation of the word for "number", e. g. Italian numero, French numéro, and Portuguese and Spanish
This article describes other typographical abbreviations for "number" in different languages, in addition to the numero sign proper.

The numero sign's non ligature substitution by the two separate letters and is common. A capital or lower case "n" may be used, followed by "o. ", superscript "o", ordinal indicator, or the degree sign; this will be understood in most languages.

In Bulgarian the numero sign is often used and it is present in three widely used keyboard layouts accessible with in BDS and prBDS and with on the Phonetic layout.

In English, the non ligature form is typical and is often used to abbreviate the word "number". In practice, the "o" is often replaced by the degree symbol (°), which is visually similar to the superscript "o" and is easily accessible on an AZERTY keyboard.

"Nomor" in Indonesian and "nombor" in Malaysian; therefore "No." is commonly used as an abbreviation with standard spelling and full stop.

The sign is usually replaced with the abbreviations "n." or "nº", the latter using a masculine ordinal indicator, rather than a superscript "O".

Because of more than three centuries of Spanish colonisation, the word número is found in almost all Philippine languages. "No." is its common notation in local languages as well as English.

In Portugal, the similar looking notation is often used. In Brazil, where Portuguese is the official language, is often used on official documents. In both cases, the symbol used is the masculine ordinal indicator. However, the Brazilian National Standards Organization (ABNT) determines that the word "número" should be abbreviated "n." only.

The numero sign is not typically used in Iberian Spanish, and it is not present on standard keyboard layouts. According to the Real Academia Española and the Fundéu BBVA, the word número (number) is abbreviated per the Spanish typographic convention of letras voladas ("flying letters"). The first letter(s) of the word to be abbreviated are followed by a period; then, the final letter(s) of the word are written as lowercase superscripts. This gives the abbreviations n. o (singular) and n. os (plural). The abbreviation "no." is not used (it might be mistaken for the Spanish negative word no). The abbreviations nro. and núm. are also acceptable. The numero sign, either as a one character symbol (№) or composed of the letter N plus superscript "o" (sometimes underlined or substituted by ordinal indicator º), is common in Latin America, where the interpolated period is sometimes not used in abbreviations.

In some languages, Nr., nr., nr or NR is used instead, reflecting the abbreviation of the language's word for "number". In German, which capitalises all nouns and abbreviations of nouns, the word Nummer is abbreviated as Nr. Lithuanian uses this spelling as well, and it is usually capitalised in bureaucratic contexts, especially with the meaning "reference number" (such as sutarties Nr., "contract No.") but in other contexts it follows the usual sentence capitalisation (such as tel. nr., abbreviation for telefono numeris, "telephone number"). It is commonly lowercase in other languages, such as Dutch, Danish, Norwegian, Polish, Romanian, Estonian and Swedish. Some languages, such as Polish, omit the dot in abbreviations if the abbreviation ends with the last letter of the original word.

It is common to replace the numero symbol with the abbreviation "No.". If the symbol is available, it was possible to make a better simulation with a superscript letter o, "No"; or the masculine ordinal indicator, "Nº"; or the degree symbol, "N°". On Russian computer keyboard layout, the № character is available and often located on the key. In macOS, the character can be typed as with some keyboard layouts. In X11 (and Linux) systems the character can be typed using Alternatively standard XIM style can be used:
In Microsoft Windows the sequence may work. In HTML the numero sign № can be invoked with №.