Anadrome

An anadrome is a word that has its spelling derived by reversing the spelling of another word. It is therefore a special type of anagram. There is a long history of names being coined as ananyms of existing words or names for entities related to the thing named by this subset of anadromes.

Examples
Many jazz titles were written by reversing names or nouns: Ecaroh inverts the spelling of its composer Horace Silver's Christian name. Sonny Rollins dedicated to Nigeria a tune called "Airegin".