Webster's Revised Unabridged Dictionary · 1913

Anagram

Anagram (an"ȧ*gram) , noun

[French anagramme, Late Latin anagramma, from Greek 'ana` back, again + gra`fein to write. See Graphic.]

Literally, the letters of a word read backwards, but in its usual wider sense, the change of one word or phrase into another by the transposition of its letters. Thus Galenus becomes angelus; William Noy (attorney-general to Charles I., and a laborious man) may be turned into I moyl in law.

Anagram , transitive verb

To anagrammatize.
Some of these anagramed his name, Benlowes, into Benevolus. — Warburton