Idioms and set phrases are the hardest part of fluency and the part textbooks handle worst, which leaves an opening in the largest of this word’s markets. Phraseology is the study of set phrases, idioms and fixed expressions, and it’s also simply the way a particular field words things. Aviation phraseology is standardised and mandatory. Legal phraseology is a profession’s entire vocabulary. The linguistics reading suits a research resource, a corpus tool, a language learning product, or an academic project.

Abbreviation density in technical and medical writing is punishing, and a proper reference database would be genuinely useful. That’s the least obvious reading and a solid one. Abbreviatory means tending to abbreviate. It’s a real if uncommon adjective naming something everyone does constantly: shortening, compressing, cutting to the point. That’s a good position for a product in summarisation, note-taking or writing. It describes the function without using any of the exhausted vocabulary of that category, and because the word is rare there’s no competing brand and a clean trademark path.