Definition of anaptyxis in English:

anaptyxis

noun

Phonetics
  • [mass noun] The insertion of a vowel between two consonants to aid pronunciation, as in he went thataway.

    • ‘There is cross-linguistic evidence for associating anaptyxis-prothesis asymmetries with the nature of the consonants involved in the process.’
    • ‘This appendix provides evidence of the application of anaptyxis in Old English.’
    • ‘Prothesis and anaptyxis are often called simply ‘vowel’ or ‘schwa epenthesis’.’
    • ‘It seems more like anaptyxis to me, with maybe a compensatory syncope.’
    • ‘It is the unstressed environment that licenses anaptyxis, and so consistently closed, unstressed syllables are required.’

Origin

Late 19th century: modern Latin, from Greek anaptuxis unfolding, from ana- back, again + ptuxis folding.

Pronunciation:

anaptyxis

/ˌanəpˈtɪksɪs/