Chemistry Abbreviations Starting with the Letter A

A common chemistry abbreviation for atom is A.
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By
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
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Anne Marie Helmenstine, Ph.D.
Updated August 16, 2019

Chemistry abbreviations and acronyms are common in all fields of science. This collection offers common abbreviations and acronyms beginning with the letter A used in chemistry and chemical engineering.

Chemistry Abbreviations: A

  • A: Atom
  • AA: Acetic Acid
  • AA: Amino Acid
  • AA: Atomic Absorption spectroscopy
  • AACC: American Association for Clinical Chemistry
  • AADC: Amino Acid DeCarboxylase
  • AADC: Aromatic L-Amino acid DeCarboxylase
  • AAS: Atomic Absorption Spectroscopy
  • AB: Acid-Base
  • AB: Acid Bath
  • ABC: Atomic, Biological, Chemical
  • ABCC: Advanced Biomedical Computing Center
  • ABCC: American Board of Clinical Chemistry
  • ABS: Acrylonitrile Butadiene Styrene
  • ABS: Absorb
  • ABV: Alcohol By Volume
  • ABW: Alcohol By Weight
  • Ac: Actinium
  • AC: Aromatic Carbon
  • ACC: American Chemical Council
  • ACE: Acetate
  • ACS: American Chemical Society
  • ADP: Adenosine DiPhosphate
  • AE: Activation Energy
  • AE: Atomic Emission
  • AE: Acid Equivalent
  • AFS: Atomic Fluorescence Spectroscopy
  • Ag: Silver
  • AH: Aryl Hydrocarbon
  • AHA: Alpha Hydroxy Acid
  • Al: Aluminum
  • ALDH: ALdehyde DeHydrogenase
  • Am: Americium
  • AM: Atomic Mass
  • AMP: Adenosine MonoPhosphate
  • AMU: Atomic Mass Unit
  • AN: Ammonium Nitrate
  • ANSI: American National Standards Institute
  • AO: Aqueous Oxygen
  • AO: Aldehyde Oxidase
  • API: Aromatic PolyImide
  • AR: Analytical Reagent
  • Ar: Argon
  • As: Arsenic
  • AS: Ammonium Sulfate
  • ASA: AcetylSalicylic Acid
  • ASP: ASParate
  • AT: Adenine and Thymine
  • AT: Alkaline Transition
  • At: Astatine
  • AT NO: Atomic Number
  • ATP: Adenosine TriPhosphate
  • ATP: Ambient Temperature Pressure
  • Au: Gold
  • AW: Atomic Weight