Abbreviations
AND SYMBOLS FOR CHEMICAL ELEMENTS

The following list of abbreviations is not intended to be all-inclusive; it does, however, contain many of those most commonly used.  Symbols for chemical elements are also included.  Most of these abbreviations have been normalized to one form.  In practice, however, there is considerable variation in the use of periods and in capitalization (as mph, m.p.h., Mph, and MPH), and stylings other than those given in the dictionary are often acceptable.

For a list of abbreviations regularly used in this dictionary, see the section Abbreviations in This Work in the front matter.

For a list of special signs and symbols not readily alphabetizable, see the section Signs and Symbols in the back matter.