| Definition -
(Aka notae Tironianae)
A system of shorthand purportedly invented by Cicero's scribe Marcus Tullius Tiro.
Tiro's system consisted of about 4,000 signs, which was extended in classical times to approximately 5,000 signs. During the Europe's Middle Ages, the system was taught in monasteries and was extended to about 13,000 signs. Its use declined after 1100.
Note that some of Tiro's abbreviations are still in use, for example, NB, i.e., and e.g.
Explanations for some Tironian notes in a manuscript from 9th century.