A word or phrase formed by reordering the letters of another word or phrase, such as satin to stain.
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 Indo-European roots.] an'a·gram·mat'ic (-grə-māt'ĭk) adj., an'a·gram·mat'i·cal·ly adv.
[an-uh-gram] 
noun, verb, -grammed, -gram⋅ming.
) a game in which the players build words by transposing and, often, adding letters.