an·a·gram 
(ănə-grăm′)
(ănə-grăm′)n.
1. A word or phrase formed by reordering the letters of another word or phrase, such as satin to stain.
2. anagrams (used with a sing. verb) A game in which players form words from a group of randomly picked letters.
[New Latin anagramma, from Greek anagrammatismos, from anagrammatizein, to rearrange letters in a word : ana-, from bottom to top; see ANA- + gramma, grammat-, letter; see gerbh- in the Appendix of Indo-European roots.]
an′a·gram·matic (-grə-mătĭk) adj.
an′a·gram·mati·cal·ly adv.
an′a·gramma·tize′ (-ə-tīz′) v.