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A heteropalindrome


Neil Armstrong of course is the first human being ever to have set foot on a celestial body other than earth. It is oddly appropriate, then, that the heteropalindrome (the semordnilap) of his name is: "Gnorts, Mr Alien."

A palindrome is a word or phrase spelled the same way backwards and forwards.  Like the reputed book about Theodore Roosevelt: "A man, a plan, a canal -- Panama". 

The word "semordnilap" is "palindromes" spelled backwards. It is sometimes used for a different but related concept -- a word or phrase that spells one thing in another direction and another backwards. Like tang/gnat.

Heteropalindromes means the same thing. 

An example: Gnorts, Mr Alien. 

I have to go now. 

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