What is abbreviation for in particular?

The abbreviation for "in particular" is "i.e." which stands for the Latin phrase "id est." However, it is important to note that "i.e." is more commonly used to clarify or specify something previously mentioned rather than as a direct abbreviation for "in particular." A more appropriate abbreviation might be "i.p." if one were to create a shorthand for "in particular," although it is not widely recognized.