Corrected entry: At the Harvard(?) pool, the Vatican officer hands Langdon the paper with "illuminati" written on it. Langdon says that "illuminati" is an anagram "because it reads the same backwards and forwards", however the proper word for that is palindrome.
daemon
9th Jul 2011
Correction: He doesn't call it an "anagram", he calls an "ambigram". Which it is, not a palindrome.
Phixius ★