Definition

1. Adverb:
   • That is to say; in other words: Used to introduce a clarification, explanation, or rephrasing of a statement that has just been made. It specifies or makes the preceding statement more precise.

Usage

• The abbreviation i.e. is used to provide a more specific explanation or a clearer definition of something you have just mentioned.
• It is typically used in writing, especially in formal or academic contexts.
• It is always followed by a comma in American English.
• It is derived from the Latin phrase "".

Examples

• Adverb:
  • The event is scheduled for the first Monday of the month, i.e., June 5th. (This clarifies which specific date "the first Monday" refers to.)
  • He prefers citrus fruits, i.e., oranges, lemons, and limes. (This provides specific examples of what is meant by "citrus fruits".)
  • The company is moving to a four-day workweek, i.e., employees will work four 10-hour days. (This rephrases and explains the policy in other words.)

Advanced Usage

• Clarifying a Category: Use i.e. to specify the members of a general category you have just named.
  • Please bring writing instruments, i.e., pens and pencils.
• Defining a Term: Use i.e. to give a definition or equivalent term.
  • She studies philology, i.e., the study of language in written historical sources.

Variants and Related Words

• e.g.: An abbreviation for the Latin "", meaning "for example". It is used to introduce one or more examples, whereas i.e. is used to provide a clarifying explanation or restatement.
  • Bring fruit, e.g., apples or bananas. (These are just possible examples.)
  • Bring citrus fruit, i.e., oranges or lemons. (This defines what "citrus fruit" means.)

Synonyms

• That is
• In other words
• Namely
• Specifically
• To put it another way

Notes

• i.e. is not used to introduce a list of examples in the way "e.g." is. It is used for explanation and precision.
• It is common to place the abbreviation within parentheses or after a comma.
• Remember the mnemonic: i.e. = "in essence" or "in effect" to recall its explanatory function.

Adverb

1. that is to say; in other words