The acronym "IIRC" stands for "If I Recall Correctly." It is often used in written communication, particularly in online chats or social media, to indicate that the speaker is trying to remember something from memory and is not entirely sure about the accuracy of the information. It's a way to acknowledge that the information being shared is based on recollection and may not be completely reliable.
The acronym "IIRC" is formed from the initial letters of the phrase "If I Recall Correctly." It first appeared in electronic communication, particularly on forums and email, during the rise of the internet in the late 20th century.