netcronym
noun [ C ] uk/ˈnet.krə.nɪm/ us/ˈnet.krə.nɪm/
网络缩写词（由一词组中各单词首字母组成的缩写词，常出现在网络聊天或电子邮件中）
an abbreviation that consists of the first letters of each word in a phrase and is used when discussing a subject in a chat room or when writing an email
Netcronyms are a quick way of telling people what you think. 网络缩写词是一种迅速传达意思的手段。
IMO is a netcronym for "in my opinion". IMO 是 in my opinion 的网络缩写词。