According to Douglas Hofstadter everything of the form A-B-A is a sandwich. A good example is the name EIN-ST-EIN. Hofstadter's definition and example hide as much as they reveal. I'd try to give a better definition: Everything of the form AB-C-AB or AB-C-BA is a sandwich. This broader definition treats palindromes as sandwiches, therefore both KA-Y-AK and ST-UPIDE-ST count as sandwiches.
Q: Besides the trivial cases of: a) the palindromes and b) the one-letter sandwich words (such as E-LIT-E), are there other sandwich words in English?
A: There are 203 other sandwich words of the form AB-C-AB, such as AL-CHEMIC-AL and TE-AMMA-TE. There are 566 other sandwich words of the form AB-C-BA, such as AN-TEN-NA and REV-OL-VER. I even found a sandwich word that is not in my dictionary: RET-ROFIT-TER.
Q: Besides the trivial cases of: a) the palindromes and b) the one-letter sandwich words (such as E-LIT-E), are there other sandwich words in English?
A: There are 203 other sandwich words of the form AB-C-AB, such as AL-CHEMIC-AL and TE-AMMA-TE. There are 566 other sandwich words of the form AB-C-BA, such as AN-TEN-NA and REV-OL-VER. I even found a sandwich word that is not in my dictionary: RET-ROFIT-TER.
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