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Glycerin vs Copygraph - What's the difference?

glycerin | copygraph |

As nouns the difference between glycerin and copygraph

is that glycerin is an alternative spelling of lang=en while copygraph is an early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.

glycerin

English

Noun

(-)
  • (organic compound)

    • References

    *

    copygraph

    English

    Noun

    (en noun)
  • (dated) An early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.