Definition of lexicology in English:

lexicology

noun

  • [mass noun] The study of the form, meaning, and behaviour of words.

    • ‘Living dialects were seen to furnish a huge treasury of living data on phonology, lexicology, and other features of language that written texts could not furnish.’

Pronunciation:

lexicology

/ˌlɛksɪˈkɒlədʒi/