Sentence:  Thus "hamburger" (whose true etymology is 'city of Hamburg' + "er" 'someone from') has been reanalyzed as "ham" + "burger" 'burger made with ham.' [...] Subsequently, on the analogy of this <WSD>folk etymology</WSD>, new forms such as "cheeseburger", "chiliburger", and plain "burger" have been created. 
Meaning of the word marked with <WSD> tags:  A misunderstanding of the etymology of a word appealing to the unlearned mind; an etymology that incorrectly explains the origin of a word based on a judgement out of knowledge or passions of a common speaker of the language instead of expertise in its past.