Definition of "Dionysos"

The rival festivals of Dionysos were in mid-winter.

1908, Jane Ellis Harrison, Prolegomena to the Study of Greek Religion

In an ancient scholarly compendium of writings on Dionysos, Diodorus Siculus wrote: “He seems to be dual in form because there are two Dionysoi: the bearded Dionysos of the old times, since the ancients wore beards, and the younger, beautiful and exuberant Dionysos, a youth.”

1976, Carl Kerényi, translated by Ralph Manheim, Dionysos: Archetypal Image of Indestructible Life (Bollingen Series; LXV), Princeton, N.J.: Princeton University Press, published 1996, page 383

As for the two Dionysoi under the handles, the conceit of putting figures, sometimes on a smaller scale, under the handles, is not unique: […]

1985, Dietrich von Bothmer, The Amasis Painter and His World: Vase-Painting in Sixth-Century B.C. Athens, Malibu, Calif.: The J. Paul Getty Museum; New York, N.Y.; London: Thames and Hudson Ltd., page 132, column 1

Before him Dionysos (with kantharos) and a woman seated facing r.; a seated Athena and a second Dionysos with kantharos, looking round at them. Cf. Athens, NM 9687 (ABV 491, 58) with a seated H., two Dionysoi and a satyr.

1990, Lexicon Iconographicum Mythologiae Classicae, volume V, 1 (Herakles–Kenchrias), Zürich, München [Munich]: Artemis Verlag, page 155, column 1

The Athenians, for their part, decided to adopt this god as a κηδεστής, “a relative/son in law.” Comparably, one of the two Dionysoi in the city of Heraea in Arcadia was called polites. Gods as honorary citizens and owners of land and house, that is the ultimate expression of local inclusion in the world of ‘ours’—a “naturalization” in the words of Detienne.

2011, H[enk] S. Versnel, Coping with the Gods: Wayward Readings in Greek Theology (Religions in the Graeco-Roman World; 173), Leiden, Boston, Mass.: Brill, page 96