E

Earth Capitalize when used as the proper name of the planet. Lowercase in other uses.
   
e-business  
   
e-commerce  
   
Edison Theatre  
   
either … or, neither … nor

The nouns that follow these words are alternate subjects and so require a verb that agrees with the nearer subject:

Neither they nor he is going.
Neither he nor they are going.

   
elderly See older adults.
   
Eliot Society

The full title, William Greenleaf Eliot Society, is to be used on first reference. Eliot Society is acceptable for later references.

For style to be followed in all Eliot Society publications, see Appendix I.

   
ellipsis ( … )

The keyboard command (Option + semicolon) is recommended for making an ellipsis because it adds a thin space between the three periods.

Add a regular space before and after the ellipsis. When the ellipsis falls between sentences, the sequence will be 1) sentence, 2) sentence’s ending punctuation mark, 3) space, 4) ellipsis, 5) space, 6) beginning of next sentence.

   
e-mail

Acceptable in all references as noun or verb.

When providing an e-mail address in text, preferred use is placing it in boldface type or in a second color (if available).

   
emeritus

Use the appropriate form—emeritus for masculine singular, emerita for feminine singular, emeriti for masculine plural or both genders, emeritae for feminine plural.

References generally should follow the noun (i.e., professor emerita of music), but use “emeritus trustee.”
   
endowed professorships See named professorships.
   
Engineering & Applied Science, School of The full title is to be used on first reference. Acceptable later references are School of Engineering, School, and engineering school. Included in this School is the Sever Institute Program of Continuing Studies; the full name is to be used on first reference, while the Sever Institute is acceptable for later references.
   
ensure

Following the AP stylebook, use ensure to mean guarantee.

“Please ensure that your application arrives on time.” See insure.

   
etc. Avoid in body copy. “Bring books, notebooks, slide rules, etc. to the exam” should be replaced with “Bring such items as books, notebooks, and slide rules to the exam.”