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A,

first letter of the alphabetalphabet
[Gr. alpha-beta, like Eng. ABC], system of writing, theoretically having a one-for-one relation between character (or letter) and phoneme (see phonetics). Few alphabets have achieved the ideal exactness.
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. A is a usual symbol for a low central vowel, as in father; the English long a (ā) is pronounced as a diphthong of ĕ and y. The corresponding letter of the Greek alphabet is named alpha. Alpha and omega, the last letter of the Greek alphabet, symbolize the beginning and the end and, in the New Testament, Christ. In musical notationmusical notation,
symbols used to make a written record of musical sounds.

Two different systems of letters were used to write down the instrumental and the vocal music of ancient Greece. In his five textbooks on music theory Boethius (c.A.D. 470–A.D.
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 the letter is the symbol of a note in the scale.

a

(electricity)
(physics)

A

(electricity)
(mechanics)

Å

(mechanics)

A

1. Abbr. for ampere, a unit of electric current.
2. Abbr. for area.

dB(A)

A unit of sound-level; a reading taken on the A-scale of a sound-level meter.

a

, A
the first in a series, esp the highest grade or mark, as in an examination
References in periodicals archive ?
Quilt curved lines on the dark blue A's and B's and navy blue A's and B's in the quilt center as shown.
But, what seemed like a way to fish or cut bait for Wolff and the current owners of the A's seems to run deeper.
The A's will now host the Minnesota Twins for a two-game set beginning Wednesday.
Although they ended up losing in the finals, the A's, who were the season champs with an 11-1 mark, had a good run in the HLBB tournament, finishing with a 4-2 record.
The former would be triggered, for example, if X redeemed all of A's remaining shares; the latter would be triggered, for example, if A sold the remaining 50 shares to an unrelated third party for a $30 recognized gain.
For instance, since the beginning of 2000, only one other major league club has won more regular season games than Oakland (the Seattle Mariners, who have just one more win), and the A's have achieved this despite being restricted by one of the smallest budgets in baseball.
Working in partnership with employers and employees, Three A's Pertemps provides informed advice on a range of human resource development programmes.
During the interview with Northern Ontario Business at A & A's 1,400-square-foot office LaBrash answered a telephone call which netted the firm 40 square kilometres of salvageable red pine.
As part of the re-launch festivities, legendary A's players Sal Bando, David Henderson, Joe Rudi and Terry Steinbach will unveil the new Comcast SportsNet Bay Area outfield signs at McAfee Coliseum in a special pre-game ceremony airing live on Comcast SportsNet's season debut of A's Pregame Live at 6:30 PM on April 1.
option=com_content&view=article&id=5561:report-as-granted-permission-to-relocate-to-san-jose&catid=30:mlb-news&Itemid=42) that this year, the A's would finally get into San Jose, Madden's timing had writers saying, "The A's are stuck.
Crisp continued his effort to spark the A's offense with his speed by stealing second base with two-outs in the ninth, after notoriously trying to steal home in Chicago last Friday.
Not at least in this magical season in which the Tigers have been the best team in baseball for most of it and slayed the mighty Yankees in the best-of-five division series in four games and then swept the A's in the best-of-seven American League Championship Series.