Definition of etymologicon in US English:

etymologicon

(also etymologicum)

noun

historical
  • A work in which the etymologies of words are given or discussed; an etymological dictionary.

Origin

Early 17th century; earliest use found in John Bingham (fl. c1616). From post-classical Latin etymologicon from Byzantine Greek ἐτυμολογικόν etymological dictionary, use as noun of neuter of ἐτυμολογικός.

Pronunciation

etymologicon

/ˌɛtɪməˈlɒdʒɪkɒn/