idolum

From Latin īdōlum. Doublet of aidoru, eidolon, and idol and related to idea.

idolum (plural idola)

1. An insubstantial image; a spectre or phantom.
2. A mental image or idea.
3. A misconception or fallacy. (Can we add an example for this sense?)

• eidolon
• idol

• dolium, moduli, moulid

From Ancient Greek εἴδωλον (eídōlon, “image; idol”), from εἶδος (eîdos, “form”).

• (Classical Latin) IPA^(key): [iːˈdoː.ɫũː]
• (modern Italianate Ecclesiastical) IPA^(key): [iˈd̪ɔː.lum]

īdōlum n (genitive īdōlī); second declension

1. image, form, especially a spectre, apparition or ghost
2. (Late Latin, Christianity) idol

Second-declension noun (neuter).

• “idolum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• "idolum", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• idolum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.