idus

See also: -idus

Latin

According to Macrobius (Macr. Sat. 1, 15. § 17) from an Etruscan verb meaning to divide, which he cites with Latin flexion as īduāre. ^[1]^[2]

īdūs f pl (genitive īduum); fourth declension (plural only)

The ides; in the Roman calendar the fifteenth day of March, May, July, October, and the thirteenth day of the other months. Eight days after the nones.

Fourth-declension noun, plural only.

“idus”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
“idus”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, pages 295-6

^ John Smith, The New Hampshire Latin grammar: comprehending all the necessary rules in orthography, etymology, syntax, and prosody; with explanatory and critical notes, and an appendix, Boston, 1802, p. 119: „We may derive idus from iduare, an obsolete word signifying to divide.“
^ īduo, āre in Karl Ernst Georges' Ausführliches lateinisch-deutsches Handwörterbuch at www.zeno.org

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idus

Wikipedia ^es

idus m pl (plural only)