FromLatincalendārium.Doublet ofcalendar.

• (Received Pronunciation)IPA^(key): /ˌkælənˈdɛəɹi.əm/
• (General American)IPA^(key): /ˌkælənˈdɛɹi.əm/
• Rhymes:-ɛəɹiəm

calendarium (pluralcalendariaorcalendariums)

1. Acalendar ortimeline orevents.
   • 1865, “PHŒNI’CIA”, inChambers’s Encyclopædia: A Dictionary of Universal Knowledge for the People, volume VII, London:W. and R. Chambers, page497:

     Phœnician names occur in Suidas, Dioscorides, Apuleius, in martyrologies,calendariums, Acts of Councils, in Church Fathers (Augustine, Priscianus, Servus), &c.

   • 1910,The Catholic Encyclopedia: An International Work of Reference on the Constitution, Doctrine, Discipline, and History of the Catholic Church, page249:

     A certain Paolo Clarante also composed acalendarium and offered it to the pope for examination.

   • 1943,The Sight-Saving Review, page213:

     His stories were not new but were arranged in order as in the severalcalendaria.

   • 1976,Paper, page96:

     ALTHOUGH starch is an important raw material of the paper making industry, the starch indusry has not been able to cope with the technical specification requirements for coated packaging boards, nor with those for gravure coated papers, nor with the better offset grades typically as used for the higher quality advertising material,calendariums and art printings.

   • 1991,JPRS Report: East Europe, page38:

     This is attested to also by thecalendariums of Czech and Moravian codices with liturgical content.

• kalendārium

Fromkalendae(“Kalends, first day of the month”) +‎-ārium(of purpose), via *kalendārius (relating to the Kalends), fromcalō(“I call out”).

• (Classical Latin)IPA^(key): [ka.ɫɛnˈdaː.ri.ũː]
• (modern Italianate Ecclesiastical)IPA^(key): [ka.len̪ˈd̪aː.ri.um]

calendārium n (genitivecalendāriīorcalendārī);second declension

1. Anaccount book,debt book.

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

• calendālis,kalendālis
• Kalendae
• kalendārius

Borrowings:

• “calendarium”, inCharlton T. Lewis and Charles Short (1879),A Latin Dictionary, Oxford: Clarendon Press
• "calendarium", in Charles du Fresne du Cange’sGlossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “calendarium”, inGaffiot, Félix (1934),Dictionnaire illustré latin-français, Hachette.
• “calendarium”, inHarry Thurston Peck, editor (1898),Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers
• calendarium inRamminger, Johann (16 July 2016 (last accessed)),Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700‎^[1], pre-publication website, 2005-2016
• “calendarium”, inWilliam Smith et al., editor (1890),A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

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• Rhymes:English/ɛəɹiəm
• Rhymes:English/ɛəɹiəm/5 syllables
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• Latin terms suffixed with -arium
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