The most important of his works were his editions of Pompeius Festus and Verrius Flaccus, and his translations of Horace (with notes), Aristotle's Poetics, the Electra and Oedipus Coloneus of Sophocles; Epictetus, Hippocrates and Plutarch's Lives.
It is one of three major Latin dictionaries preserved from antiquity, along with that of Festus, which was an epitome of Verrius Flaccus' work De verborum significatu, and the Etymologiae of Isidore of Seville.