Acronyms use the first letter of each word of a name. Diacronyms instead use the first two letters of names. While not yet called that, they featured in "Short People" in the November issue. Diacrostics are diacronyms of whole sentences. Unlike aconyms, which usually have to be defined and memorised, diacrostics may be -- and triacrostics often are -- directly readable, especially if the context is known, the language is simple, or the sentence is a familiar quotation.
Word Ways: Vol. 43
, Article 8.
Available at: http://digitalcommons.butler.edu/wordways/vol43/iss4/8