Definition of phylactology in US English:

phylactology

noun

nonce-word
  • Counter-espionage.

Origin

1960s; earliest use found in Kingsley Amis (1922–1995), writer. From Hellenistic Greek ϕυλακτός + -ology.

Pronunciation

phylactology

/ˌfʌɪlakˈtɒlədʒi/