Dictionaries/Encyclopedias/Abbreviations/Acronyms
- AccessScience @ McGraw-Hill the online encyclopedia of science & technology

Online version of the 9th edition of the McGraw-Hill Encyclopedia of Science & Technology. Includes access to definitions from The McGraw-Hill Dictionary of Scientific & Technical Terms. - The Acronyms and Abbreviations Database
From Indiana University-Bloomington's Chemistry Library. Search by acronym or keyword. - CHEMnetBase

The online version of many popular Chapman & Hall/CRC publications. Check out the product tours for information about a resource and how to use its features.- Combined Chemical Dictionary
Includes Dictionary of Commonly Cited Compounds, Dictionary of Drugs, Dictionary of Inorganic and Organometallic Compounds, Dictionary of Natural Products, and Dictionary of Organic Compounds. - Handbook of Chemistry and Physics (87th edition)
- Polymers: A Property Database
- Properties of Organic Compounds
"A database that contains over 29,000 of the most commonly sought organic compounds, featuring physical data, spectral data, and structures."
- Combined Chemical Dictionary
- A Dictionary of Chemistry (Oxford)

- e-EROS: Encyclopedia of Reagents for Organic Synthesis

Reference tool for reagents in organic synthesis. Includes over 70,000 reactions and 4,000 of the most frequently used reagents. - Electrochemistry Dictionary
- Encyclopedia of Spectroscopy and Spectrometry
Covers spectroscopy from theory to applications. - Glossary of Common Terms and Abbreviations in Quantam Chemistry
Glossary adapted from: K. K. Irikura In " Computational Thermochemistry: Prediction and Estimation of Molecular Thermodynamics"
- IUPAC Compendium of Chemical Terminology (commonly known as the Gold Book)
This resource from the International Union of Pure and Applied Chemistry "is one of the series of IUPAC 'Colour Books' on chemical nomenclature, terminology, symbols and units (see the list of source documents), and collects together terminology definitions from IUPAC recommendations already published in Pure and Applied Chemistry and in the other Colour Books." - Journal Titles and Abbreviations (from University of British Columbia)
- Medical Subject Headings, MeSH
An online vocabulary look-up aid available for use with MeSH. - STASA Acronym Finder (Wiley)
Scientific and Technical Acronyms, Symbols, and Abbreviations finder online. - ChEBI, Chemical Entities of Biological Interest
Chemical Entities of Biological Interestis a freely available dictionary of molecular entities focused on ‘small’ chemical compounds.