Q

Q is the seventeenth letter of the Latin alphabet.

The Semitic sound value of Qôp /q/. In Greek this sign (called Qoppa in Greek) probably came to several labial plosives, among them /k_w/ and /k_w_h/. These sounds changed to /p/ and /p_h/ respectively. Therefore, Qoppa was transformed into two letters: Qoppa, which stood for a number only, and Φι (Phi) which stood for the aspirated sound /p_h/ that came to be pronounced /f/ in Modern Greek. The Etruscans used Q only in conjunction with V, symbolizing thus a /k_w/. and V. Some scholars claim that Q and Phi are unrelated.

In most Modern Languages, Q is rather superfluous; in Romance and Germanic languages it usually appears followed by the letter u. In English this most often denotes the affricate /kw/, as it does in Italian; in German, /kv/; and in French, Spanish, and Catalan, /k/. (In Spanish, "qu" replaces c for /k/ before the vowels i and e, since in those contexts c is a fricative.)

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

Q is also:

A character in the James Bond series, see Q (James Bond)
A character in the Star Trek series, see Q (Star Trek)
The leading character in the famous Chinese novel A True Story of Ah Q[?] by Lu Xun. Because of this novel, "Ah Q" in China means someone who always claims spiritual victory despite frequent defeat.
The name of a bacterial infection, see Q fever
A name for anti-submarine ships, see Q-ship
The pen name of writer Arthur Quiller-Couch
The abbreviation used by scholars of the New Testament to describe the Q document, a hypothetical lost written "Source" (German, Quelle, hence, Q) behind the Synoptic Gospels.
The stock symbol for the recently bankrupt Qwest Communications International Inc.[?]
A bold Q is used by mathematicians to denote the set of rational numbers.
In physics, a symbol for characterizing filters, see Q factor.
In physics, a symbol for electric charge.
An "equational programming language"; see Q (programming language)[?]

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