metaplasm

1 [Latin metaplasmus, literally, transformation, from Greek metaplasmos, from metaplassein to remold, from meta- + plassein to mold — more at plaster] :  alteration of regular verbal, grammatical, or rhetorical structure usually by transposition of the letters or syllables of a word or of the words in a sentence

2 [International Scientific Vocabulary meta- + -plasm; originally formed as German metaplasma] :  material consisting of lifeless derivatives of protoplasm (as cell walls, starch grains)