A (disambiguation)

A is

• A, as the lowercase letter a, the first letter of the Latin alphabet
• Α, α as a lower-case letter, the first letter of the Greek alphabet
• А, as a lower-case letter а, the first letter of the Cyrillic alphabet

The name of

• A Latangadasu ( born 1984 ), Chinese mountaineers
• A ( yacht), a mega - yacht
• A (band), a British rock band
• A ( music album ), an album by the Swedish singer Agnetha Fältskog

A as a count variable or unit is

• Ampere, SI base unit for electric current
• The decimal value 10 in a place value system with a base greater than 10
• The Roman numeral rarely used for the value of 500

A is the symbol for

• Area ( Latin area)
• Mass number, number of nucleons
• Absorbance (Physics)
• Activity (Physics) a radioactive substance
• Vector potential and the four potential in electrodynamics
• In chemistry, the Helmholtz energy

A shortcut or trademarks

• For Austria (latin Austria ), see Nationality characters
• Followed by a digit ( A4, A5, etc. ) for a DIN format paper size, refer to Paper Size
• For a spectral classification of stars
• A. ( followed by name) for artery ( artery)
• In music, the key of A - flat major
• In hockey for a valuable player
• In computer science for a record type of the DNS system, see A Resource Record
• For Codex Alexandrinus, in textual criticism of the Bible

In Chemistry:

• The base adenine
• For the nucleoside adenosine
• For the amino acid alanine

In the transport sector:

• Followed by a number in Germany, Austria and Switzerland for highway
• As Einflaggensignal on a watercraft for "I have divers down ", see Flag Alphabet
• On the car's back wheel in France - red in a white circle - for Apprentice (Eng. about new drivers )
• For a driving license class in the EU, see driving license ( EU law)
• Followed by a number as an abbreviation for an aircraft model of the Airbus Company
• For a license plate class of aircraft, see aerial vehicle registration
• Followed by a number for a fighter aircraft, see designation system for aircraft of the U.S. Armed Forces
• As the first letter in the ICAO code for the South West Pacific
• For airspace class, see airspace
• As a generic letter for railroad cars of the first class, see UIC type designation system for passenger coaches

On license plate:

• Bulgaria: Burgas Oblast
• Germany: county-level city of Augsburg and Augsburg district
• Estonia: Main area (excluding Tallinn, Harju County and Tartu)
• UK: Anglia
• Ascension Island
• Kyrgyzstan: Batken region
• Croatia: Diplomatic Corps ( yellow text on bright blue background)
• Montenegro: Diplomatic Corps
• Austria: Supreme bodies of the Republic: ( President, National President, Chancellor, Federal Minister, Court President, etc.)
• Portugal: Azores (trailers and vehicles for export )
• Romania: Army ( Armata )
• Switzerland: Administration (Deleted)
• Spain: Alicante (repealed)
• Czech Republic: Prague
• Turkey: provincial government, university rectors (red lettering on a white background) or police (white font on blue background )

As a counter variable or unit stands for:

• Atto -, SI prefix for trillionth ( 10-18)
• Year, time unit ( Latin annus )
• Ar, square measure

A is the symbol for

• Acceleration
• Temperature conductivity

Is a shortcut or trademarks

• For linking in HTML ( ), see Day ( computer science )

• For the concert pitch a1 or a '( = 440 Hz)
• For a pitch in octave to a1. To distinguish strokes or high digits are possible, see frequencies of the equal temperament tuning
• The key of A minor
• The ring finger of Zupfhand the fingering for guitar

• Å ( disambiguation)
• A ( Kana ) Japanese characters
• ª feminine ordinal
• ₳, the mark of a former Argentine currency, see Austral (currency)
• The capital letters A to O for anarchy
• For the universal quantifier, see quantifier

International Phonetic Alphabet

• A, unrounded open front vowel
• ɐ ( HTML code ɐ ), Fast open central vowel
• ɑ ( HTML code ɑ ), unrounded open back vowel
• ɒ ( HTML code ɒ ), Rounded open back vowel
• ã, unrounded open Hinterzungennasalvokal, see nasal vowel
• æ, almost unrounded open front vowel
• ʌ ( HTML code ʌ ), half-open unrounded back vowel

• Type A
• Series A
• Serie A (disambiguation)
• A-, a prefix for words
• A
• A * algorithm

• Disambiguation
• Abbreviation