As a Noun: 1. A word made from the first letters of the words in a phrase, especially when this is used as a name; eg. WHO (World Health Organisation). English = acronym. Note: 1. The signer in the video is giving a definition in Auslan for the English term ACRONYM. There appears to be no commonly used Auslan sign for ACRONYM (but some signers represent this visually using depicting signs, once they have established the topic). If you know a sign for ACRONYM used by you or other Auslan users (deaf people or interpreters) please go to "Report missing sign" and supply details. Thank you.