|
mNo edit summary
|
Link to ten
|
||
| Line 11: | Line 11: | ||
In context, '''X''' is also used as or in: |
In context, '''X''' is also used as or in: |
||
* The [[Roman numeral]] for |
* The [[Roman numeral]] for [[ten]]. |
||
* In [[elementary algebra]], <var>x</var> commonly represents an unknown variable. Even though any letter can be used, <var>x</var> is the most common by far. This usage can be traced back to the Arabic word ?ay 'thing' which was spelled with an initial x in Old Spanish or (according to other sources) an abbreviation of Latin causa which was the translation of Arabic š. |
* In [[elementary algebra]], <var>x</var> commonly represents an unknown variable. Even though any letter can be used, <var>x</var> is the most common by far. This usage can be traced back to the Arabic word ?ay 'thing' which was spelled with an initial x in Old Spanish or (according to other sources) an abbreviation of Latin causa which was the translation of Arabic š. |
||
* In a general sense, to represent the unknown or secret, as in ''project X''. |
* In a general sense, to represent the unknown or secret, as in ''project X''. |
||
X is the twenty-fourth letter of the Latin alphabet.
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
/ks/ was in Ancient Greece written as Chi 'Χ' (Western Greek) or Xi 'Ξ' (Eastern Greek). In the end, Chi was standardized as /k_h/ (/x/ in Modern Greek) as well as Xi for /ks/. But the Etruscans took over X from older Western Greek, therefore, it stood for /ks/ in Etruscan and /ks/ and /gs/ [gz] in Latin. Some scholars claim that Latin X is not identical with Greek X.
It is also controversial whether Psi, Chi (Khi) and Xi are Greek inventions or whether they are ultimately of Semitic origin.
In context, X is also used as or in:
