A name that was once an acronym but outgrew the relevance to the words it represented.
JILA, formerly known as the Joint Institute for Laboratory Astrophysics, better known for Nobel Prize winning research in ultracold matter, is a nacronym.
n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (See: dead name)
v. 1. To call somebody by their necronym.
v. 2. To out somebody's necronym to the public.
Don't call her by her necronym . She hasn't gone by that name in years.
An acronym that realates to the National Association for Campus Activities. These are from past or present use and are quite confusing to those who are not part of the association.
There are so many NACAronyms that we cannot tell an RLT for a RCPC.