jusjurandum

• (Classical) IPA^(key): /i̯uːs.i̯uːˈran.dum/, [i̯uːs̠i̯uːˈrän̪d̪ʊ̃ˑ]
• (Ecclesiastical) IPA^(key): /jus.juˈran.dum/, [jusjuˈrän̪d̪um]

jūsjūrandum n (variously declined, genitive jūrisjūrandī or jūsjūrandī); third declension, second declension

1. Alternative form of iūs iūrandum (“oath”)

• In Classical Latin, both parts decline, but in Medieval Latin sometimes only the second part declines.

Third-declension noun (neuter, imparisyllabic non-i-stem) with a second-declension noun (neuter) or second-declension noun (neuter).

• “jusjurandum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• jusjurandum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
• “jusjurandum”, in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
• E. J. A. Seyferts auf Geschichte und Kritik gegründete lateinische Sprachlehre, zunächst bestimmt für allerley Lernende. Dritter Theil oder Zweyter Cursus, Brandenburg, 1800, page 33–34
• Benjamin A. Gould, Adam's Latin Grammar, with some Improvements, Boston, 1831, page 57–58: "In double nouns, both nouns are declined when combined in the nominative; as,   Respublica, a commonwealth, fem. [...]   Jusjurandum, an oath, neut. [...]"
• E. A. Andrews and S. Stoddard, A Grammar of the Latin Language; For the Use of Schools and Colleges, 6th edition, Boston, 1839, page 39: "Declension of Compound Nouns. [..] When a compound noun consists of two nominatives, both parts are declined; but when one part is a nominative, and the other an oblique case, the nominative only is declined. Of the former kind are respublĭca, a commonwealth, and jusjurandum, an oath; of the latter, mater-familias, a mistress of a family."