acronym creep
n.— «Acronym Creep—a condition known to beset the Canadian Chinese Christian Community (CCCC) and United Nations (UN) staff. Akin to what’s known in software developing parlance as “feature creep”, acronym creep is a prediliction or tendancy to using using more and more acronyms.» —“Acronym Creep” by Dan p a s s i o n + r e a s o n Mar. 15, 2005. (source: Double-Tongued Dictionary)