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A neologism is a newly coined word, which just means a made-up word that might or might not catch on.

methodography: In Harry Shearer's Le Show, a fictional pollster explained allegations of systematic errors in polling data, "So far we're pretty satisfied with the methodology we used.  We're looking right now at the deeper layer, the methodography, and by the end of next week we'll have completed an unprecedented methodostomy.  Then I think we'll have a much better idea of what we're looking at, or for."

Internet References

Harry Shearer: Le Show

Urban Dictionary: pietrisycamollaviadelrechiotemexity, a neologism. 

Related pages in this website

Numbers - Words for numbers; the language of numbers, where the neologism, pietrisycamollaviadelrechiotemexity, is used.

Modern words - neologisms for modern times

New words - new joke definitions for existing words

Back-formation (removal of supposed prefixes or suffixes) is one way to coin new words.