A
A or an
As a general rule, use “A” when the following word starts with a consonant, and “an” when it starts with a vowel.
Examples:
A man
A woman
A bus
An elephant
An octopus
There are exceptions. Some consonants have a vowel sound and are preceded by ‘an’:
Examples:
An hour
An honor
An herb
An MBA
Some vowel-starting words have a “y” or “w’ sound and are preceded by ‘a’:
A Utopian ideal
A one-time event
In summary, it is the sound of the word following the article that determines which to use, rather than the actual letter.
Abbreviation
An abbreviation is a form of shorthand, enabling readers to understand the meaning of a word or phrase without needing to see it written out in full. Abbreviations may take the form of letters to represent ...
Get Style Guide for Business Writing now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.