The Urra=hubullu (or HAR-ra = ḫubullu, or Gegenstandslisten ("lists of objects") ) is a major Babylonian glossary or "encyclopedia". It consists of Sumerian and Akkadian lexical lists ordered by topic. The canonical version extends to 24 tablets, and contains almost 10,000 words. The conventional title is the first gloss, ur5-ra and ḫubullu meaning "interest-bearing debt" in Sumerian and Akkadian, respectively. One bilingual version from Ugarit [RS2.(23)+] is Sumerian/Hurrian rather than Sumerian/Akkadian. A partial table of contents: The tablets form a series that had been arranged by time of the Sumarian Dynasty of Isin, with a bilingual tradition existing by the time the Kassites. The bulk of the collection was compiled in the Old Babylonian period (early 2nd millennium BC), with pre-canonical forerunner documents extending into the later 3rd millennium. Like other canonical glossaries, the Urra=hubullu was often used for scribal practice. Other Babylonian glossaries include:

Extant Tablets

Many copies of the series are known in collections such as the Louvre, British Museum and Ashmolean Museum. The original Akkadian texts were found during the Oxford-Field Museum Expedition to Kish, Iraq (1923-1933). The texts are collated and summarised by Meer (1939).