An anadrome[1][2][3][4][a] is a word or phrase whose letters can be reversed to spell a different word or phrase. For example, desserts is an anadrome of stressed. An anadrome is therefore a special type of anagram. The English language is replete with such words.
The word anadrome comes from Greek anádromos (ἀνάδρομος), "running backward", and can be compared to palíndromos (παλίνδρομος), "running back again" (whence palindrome).
There is a long history (dating at least to the fourteenth century, as with Trebor and S. Uciredor) of alternate and invented names being created out of anadromes of real names; such a contrived proper noun is sometimes called an ananym, especially if it is used as personal pseudonym. Unlike typical anadromes, these anadromic formations often do not conform to any real names or words. Similarly cacographic anadromes are also characteristic of Victorian back slang, where for example yob stands for boy.
Bifacial text, a kind of anadrome which reads with two distinct meanings when read forward or backward.
As the first case of a retrograde asteroid [Dioretsa] was named as an anadrome, namely asteroid spelled backwards.
These sorts of two-way words are called anadromes, and roughly 900 of them exist in everyday English.
The other side of Palindrome is semordnilap. [...] These are also called anadromes.
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