This list of word abbreviations contains some of the most commonly used shortcuts in the English language. Take special note of which ones are, and are not capitalized. Also note that some do not use periods.
You'll find a printable list of all the items at the bottom of the page.
When writing about a month, usually it is necessary to spell out the entire word. For example, it is correct to write, I am going to visit my grandmother in September. It is not correct to write, I am going to visit my grandmother in Sept.
Note: There is a trend toward using even shorter abbreviations: Su, M, T, W, Th, F, Sa. However, the ones listed above are standard.
Note that shortened forms of metric measurement labels do not use periods. Technically, these labels, such as mm, g, and cc are symbols, not abbreviations.
Examples: Dr. Arlene Smith, Rev. Kevin Reed, Pres. George Washington
Use the abbreviations only with a proper name. Otherwise, spell out the word. For example, do not write, "I am going to see my Dr." Instead, write, "I am going to see my doctor."
Abbreviations for academic degrees -- Ph.D., M.A., B.A., and so on -- may be used without a proper name. For example, it's okay to write, "It took Mary just three years to earn her Ph.D."
Examples: Arlene Smith, M.D., Robert Jones, Ed. D., Peggy Miller, B.A. Timothy Stuart, Sr.
The abbreviation, etc., is frequently misspelled. Be sure to always put the T before the C. If you have a hard time remembering the correct spelling, try this mnemonic device: ETC = Eternally Training Cats. :)
You may also be interested in these spelling resources:
List of Suffixes - We've compiled a long list of the most commonly-used suffixes. We've also include the meaning and 10 example words for each suffix.
Spelling Strategies - Students who master these ten spelling rules/strategies are sure to become better spellers! We clearly state the "rule" and provide examples of words spelled correctly when following the rule.
Troublesome Homonyms Explained, Part 1: Improve spelling skills by choosing the correct homonym. Definitions and examples included for homonyms beginning with A - P. Find Part 2 here. I've included a big, free printable list of all of these important words.