Anagram (noun)

1. A word, phrase, or sentence formed from another by rearranging its letters.
2. A rearrangement of the letters of a word or phrase to produce a new word or phrase, using all the original letters exactly once.

Origin:

The word 'anagram' comes from the greek words 'ana' meaning 'again' and 'gramma' meaning 'letter' or 'writing.'.

Examples:

1. The word 'listen' is an anagram of 'silent'.
2. He loved to solve anagrams in his free time.
3. The solution to the anagram was 'angel'.
4. An anagram of 'debit card' is 'bad credit'.
5. She created an anagram of her name to use as her username online.