Science, Tech, Math › Science Chemistry Abbreviations Starting with the Letter A Share Flipboard Email Print Paper Boat Creative/Getty Images Science Chemistry Abbreviations & Acronyms Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Anne Marie Helmenstine, Ph.D. Facebook Twitter 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. Learn about our Editorial Process Updated on 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 Cite this Article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Chemistry Abbreviations Starting with the Letter A." ThoughtCo, Aug. 25, 2020, thoughtco.com/chemistry-abbreviations-starting-with-the-letter-a-603451. Helmenstine, Anne Marie, Ph.D. (2020, August 25). Chemistry Abbreviations Starting with the Letter A. Retrieved from https://www.thoughtco.com/chemistry-abbreviations-starting-with-the-letter-a-603451 Helmenstine, Anne Marie, Ph.D. "Chemistry Abbreviations Starting with the Letter A." ThoughtCo. https://www.thoughtco.com/chemistry-abbreviations-starting-with-the-letter-a-603451 (accessed February 5, 2023). copy citation