metaplasm (linguistics)
Definition - A general term for naturally evolving changes to the spelling and pronunciation of words.
Note: These changes can involve:
(1) adding letters or syllables (epenthesis)
(2) omitting letters or syllables (apocope)
(3) transposing letters or syllables (metathesis)
(4) substituting letters or syllables (antisthecon)

Example -
Saying veg-table instead of veg - e - table is an example of the metaplasm called apocope.

Etymology -
The word derives from the Greek metaplasso, to remodel (from the Greek plassein, to mold; hence plaster, a substance that can be molded).

Oxford English Dictionary -
Its first citation is from 1432–50:
"Of the rewles of feete metricalle, of metaplasmus, of dialog metricalle."
( tr. Higden (Rolls) VI. 183)

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