Write with precision: “i.e.” vs. “e.g.”
The abbreviations “i.e.” and “e.g.” are often mixed up, but their meanings are very different
and not interchangeable.
i.e. = that is
The abbreviation “i.e.” is for the Latin term id est which means “that is” or “that is to say.” It
means the same as “in other words.”
Use i.e. when you want to clarify, explain, or restate a point using different words. Do not use
i.e. to give an example.
Example
One theory credit is equal to a 12-hour course load per term, that is, approximately one
hour per week.
One theory credit is equal to a 12-hour course load per term, i.e., approximately one
hour per week.
e.g. = for example
The abbreviation “e.g.” is for the Latin term exempli gratia which means “for example.” Use it
to introduce an example.
Example
Don't capitalize general types of credential, for example, master’s degree or bachelor's
degree, but capitalize specific credentials, for example, Bachelor of Science.
Don't capitalize general types of credential, e.g., master’s degree or bachelor's degree,
but capitalize specific credentials, e.g., Bachelor of Science.
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