
thumb|Transcription of Constantine of Preslav's [[Bulgarian abecedarius Азбучна молитва ("Alphabetical prayer"). In this work, the first letter of each verse, highlighted in bold, is part of a series of letters that are in alphabetical order (from top to bottom).|class=skin-invert-image]]
thumb|Transcription of Constantine of Preslav's [[Bulgarian abecedarius Азбучна молитва ("Alphabetical prayer"). In this work, the first letter of each verse, highlighted in bold, is part of a series of letters that are in alphabetical order (from top to bottom).|class=skin-invert-image]]
An abecedarius (also abecedary and abecedarian) is a special type of acrostic in which the first letter of every word, strophe or verse follows the order of the letters in the alphabet.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).