ko·an

[koh-ahn]
noun, plural ko·ans, ko·an. Zen.
a nonsensical or paradoxical question to a student for which an answer is demanded, the stress of meditation on the question often being illuminating.
Compare mondo.


Origin:
1945–50; < Japanese kōan, earlier koũ-an < Middle Chinese, equivalent to Chinese gōngàn public proposal

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World English Dictionary
koan (ˈkəʊæn) [Click for IPA pronunciation guide]
 
n
(in Zen Buddhism) a problem or riddle that admits no logical solution
 
[from Japanese]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Koan is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a gadget; dingus; thingumbob.
Etymonline
Word Origin & History

koan
Zen paradox, 1946, from Jap. ko "public" + an "matter for thought."
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Slang Dictionary

koan

/koh'an/ n. A Zen teaching riddle. Classically, koans are attractive paradoxes to be meditated on; their purpose is to help one to enlightenment by temporarily jamming normal cognitive processing so that something more interesting can happen (this practice is associated with Rinzei Zen Buddhism). Hackers are very fond of the koan form and compose their own koans for humororous and/or enlightening effect. See Some AI Koans, has the X nature, hacker humor.
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