What is the meaning of X?

The twenty-fourth letter of the basic modern Latin alphabet.

a voiceless velar fricative.

A name for an unknown variable.

The first coordinate in Cartesian coordinates, representing horizontal position.

Used as a placeholder for a digit or value that may vary.

A kiss at the end of a letter, or similar missive.

Lagarde, Paul de (1882) “Woher stammt das x der Mathematiker?”, in Nachrichten von der Königlichen Gesellschaft der Wissenschaften zu Göttingen (in German), number 13, pages 409–413

Alternative spelling of ×

Cajori, Florian (1914 December) “The Cross X as a Symbol for Multiplication”, in Nature, volume 94, →DOI, pages 363–364

A unit of transfer rate of CD drives, equal to 150 KiB per second.

A unit of transfer rate of DVD drives, equal 1.32 MiB per second.

, the Roman numeral ten (10)

The twenty-fourth letter of the English alphabet, called ex and written in the Latin script.

Forming gender-neutral or otherwise more inclusive versions of words, especially Spanish-derived words by replacing both the masculine -o and feminine -a.

Alternative letter-case form of X (intersex or non-binary, in passports and identification documents)

An unknown or unspecified number of.

Used between the names of two characters to denote a ship, particularly in anime, manga, and video games.

Used in place of and in artist collaborations.

the sound sequence /ɛks/ or /ks/.

the suffix or final sequence /iəs/ (-ious, -eous, -eus)

the suffix or final syllable /ʃəs/ (-tious, -cious, -xious)

the suffix or final syllable /ʃəl/ (-tial, -cial)

The eighth letter of the Afar alphabet, written in the Latin script.

The thirty-second letter of the Albanian alphabet, written in the Latin script.

The twelfth letter of the Azerbaijani alphabet, written in the Latin script.

The twenty-fifth letter of the Basque alphabet, called ixa and written in the Latin script.

A letter of the Bilen Latin alphabet.

A letter of the Mazahua alphabet.

A letter of the Comox alphabet, written in the Latin script.

A letter of the Kwak'wala alphabet, written in the Latin script.

A letter of the Mam alphabet.

The 24th letter of the Norwegian alphabet.

location marker

  1. indicates location on top of something: on, on top of

    indicates location on top of something: on, on top of

    per

    The twenty-fourth letter of the Dutch alphabet.

    The letter that represents a diacritic in the x-system, written after the letter in its non-diacriticked form; it is called ikso.

    The twenty-third letter of the Finnish alphabet, called äks or eks and written in the Latin script.

    The twenty-fourth letter of the French alphabet, written in the Latin script.

    Romanization of 𐍇

    A letter of the extended Hungarian alphabet, called iksz and written in the Latin script.

    The twenty-seventh letter of the Icelandic alphabet, written in the Latin script.

    The twenty-fourth letter of the Ido alphabet, written in the Latin script.

    The twenty-fourth letter of the Indonesian alphabet, written in the Latin script.

    Abbreviation of kali.

    Abbreviation of -nya.

    the twenty-fourth letter of the Latin alphabet, called ics in Italian

    Abbreviation of per (for).

    The twenty-third letter of the Latin alphabet, written in the Latin script.

    The twenty-fourth letter of the Malay alphabet, written in the Latin script.

    Abbreviation of tak (not).

    The twenty-eighth letter of the Maltese alphabet, written in the Latin script.

    A letter of the Navajo alphabet, written in the Latin script.

    The twenty-fourth letter of the Portuguese alphabet, written in the Latin script.

    The eleventh letter of the Romani alphabet, written in the Latin script.

    The twelfth letter of the Romani alphabet, written in the Latin script.

    The twenty-ninth letter of the Romanian alphabet, called ics and written in the Latin script.

    The fifth letter of the Somali alphabet, written in the Latin script.

    the 25th letter of the Spanish alphabet

    forms gender-neutral versions of words by replacing both the masculine o and feminine a

    por

    The twenty-sixth letter of the Tagalog alphabet (Filipino alphabet), called eks and written in the Latin script.

    The twenty-sixth letter of the Tagalog alphabet (Abecedario), called equis or ekis and written in the Latin script.

    The twenty-fourth letter of the Zulu alphabet, written in the Latin script.

    Source: wiktionary.org