Learn how to say Epenthetic correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word epenthesis:
noun (plural epentheses /-siːz/)
the insertion of a sound or letter within a word, e.g. the b in thimble.
mid 16th century: via late Latin from Greek, from epentithenai ‘insert’, from epi ‘in addition’ + en- ‘within’ + tithenai ‘to place’