FromAncient Greekβαπτιστήριον(baptistḗrion).

• (Classical Latin)IPA^(key): /bap.tisˈteː.ri.um/,[bäpt̪ɪs̠ˈt̪eːriʊ̃ˑ]
• (modern Italianate Ecclesiastical)IPA^(key): /bap.tisˈte.ri.um/,[bäpt̪isˈt̪ɛːrium]

baptistērium n (genitivebaptistēriīorbaptistērī);second declension

1. A place forbathing.
2. (Ecclesiastical Latin) Abaptistery orbaptistry; abaptismalfont.

Second-declension noun (neuter).

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

• “baptisterium”, inCharlton T. Lewis and Charles Short (1879)A Latin Dictionary, Oxford: Clarendon Press
• "baptisterium", 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)
• baptisterium inGaffiot, Félix (1934)Dictionnaire illustré latin-français, Hachette.
• “baptisterium”, inHarry Thurston Peck, editor (1898),Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers
• “baptisterium”, inWilliam Smith et al., editor (1890),A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

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