from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The insertion of a sound in the middle of a word, as in Middle English thunder from Old English thunor.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The insertion of a phoneme, letter, or syllable into a word, usually to satisfy the phonological constraints of a language or poetic context.
from the GNU version of the Collaborative International Dictionary of English
- n. The insertion of a letter or a sound in the body of a word.
from The Century Dictionary and Cyclopedia
- n. In grammar, the insertion of a letter or syllable in the middle of a word, as alituum for alitum.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the insertion of a vowel or consonant into a word to make its pronunciation easier
Late Latin, from Greek, from epentithenai, to insert : ep-, epi-, epi- + en-, in; see en-2 + tithenai, to place; see dhē- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Middle of 16th century: via Late Latin, from Ancient Greek ἐπένθεσις (epenthesis), from ἐπεντίθημι (epentithēmi, "I insert"), from ἐπί (epi) + ἐντίθημι (entithēmi, "I put in"), from ἐν (en, "in") + τίθημι (tithēmi, "I put, place"). (Wiktionary)