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Freebase(0.00 / 0 votes)Rate this definition: Weltschmerz is a term coined by the German author Jean Paul Richter and denotes the kind of feeling experienced by someone who understands that physical reality can never satisfy the demands of the mind.
Definition of welt. 1  1 : a strip between a shoe sole and upper through which they are stitched or stapled together. 2  2 : a doubled edge, strip, insert, or seam (as on a garment) for ornament or reinforcement. 3  3a : a ridge or lump raised on the body (as by a blow or allergic reaction)b : a heavy blow.