Definition of "ouroboros"
ouroboros
noun
plural ouroboroi or ouroboroses
(mythology) A serpent, dragon or worm that eats its own tail, a representation of the continuous cycle of life and death.
Quotations
The alchemists were fond of picturing their opus as a circulatory process, as a circular distillation or as the uroboros, the snake biting its own tail, and they made innumerable pictures of this process.
1968 , R. F. C. Hull, transl., Aion […] (The Collected Works of C. G. Jung), 2nd edition, volume 9.2, Princeton University Press, translation of original by C. G. Jung, page 264
Khepera eating his own seed is a model of Romantic creativity, where the self is isolated and sexually dual. Khepera bent over himself is a uroboros, the serpent eating its own tail, a magic circle of regeneration and rebirth. The uroboros is the prehistoric track of natural cycle, from which Judaism and Hellenism make a conceptual break.
1990, Camille Paglia, Sexual Personae, Yale University Press, page 41
One myth speaks of Ouroboros, a serpent-like creature that survived and regenerated itself by eating only its own tail. By neither taking from nor adding to its environment, this creature was said to be completely environmentally benign and self-sufficient.
2004, Adrian Bejan et al., Porous and Complex Flow Structures in Modern Technologies, Springer Science & Business Media, page 121
First, the snake has not caught its tail—the ouroboros figure is uncompleted. Blake executed fully formed ouroboros figures for the verso of this Night Thoughts page and for a later passage (6:690-92), and was familiar with numerous full ouroboros figures from contemporary and earlier sources […]
2013, Jackie DiSalvo, G. A. Rosso, Christopher Z. Hobson eds., Blake, Politics, and History, Routledge