An apronym is an acronym which means something appropriate to what it stands for. The word comes from a portmanteau of "a propos acronym". An apronym is a lot like a BackroNym; indeed, a BackroNym could be described as an ex post facto apronym. While backronyms are made from a word or acronym after the fact (e.g. BASIC), an apronym's expansion is the original intended expansion.
More information on apronyms and where the word came from is at http://acronyms.co.nz/ . Go there to see if an apronym can be tailored to your requirements.