Reprint from Classica and Mediaevalia 11 (1950): 1–150; and Classica and Mediaevalia 12 (1951): 79–215. The work consists of two volumes: 1. Introduction and text; 2. Commentary. Addenda were published in Analecta Hibernica 23 (1966): 313-315. A reprint was published by the Royal Irish Academy in 1993, with the two parts combined in one volume (series: Clavis Patricii 2, Royal Irish Academy Dictionary of Medieval Latin from Celtic Sources. Ancillary Publications 4).