a

a

, A

the first in a series, esp the highest grade or mark, as in an examination

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

a

(electricity)

ampere

(physics)

atto-

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A

(electricity)

ampere

(mechanics)

angstrom

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Å

(mechanics)

angstrom

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

A

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

2. Abbr. for area.

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dB(A)

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

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.