ETYMOLOGY
from Greek κρυπτός (hidden) + ὄνοµα (name)
EXAMPLE
“…The Ballad Book. Edinb. 1 827. 8vo. Maillet, Benedict de. Telliamed, being a Translation from the French.
A cryptonymous book — Telliamed being the anagram of M. de Maillet. It consists of * Discourses between an Indian philosopher and a French missionary on the diminuation of the sea, the formation of the earth, the origin of men and animals, and other curious subjects relating to natural history and philosophy. …”
From: The Bibliographer’s Manual of English Literature, Vol. III
By William Thomas Lowndes, 1834
Lexicophilia 