anacoluthon

noun pl. -·tha-t̸hə or -·thons′

1. a change from one grammatical construction to another within the same sentence, sometimes as a rhetorical device
2. a sentence in which this occurs (Ex.: “A man, young lady! lady, such a man as all the world— why, he's a man of wax!”)

Etymology: LGr anakolouthon < Gr, neut. of anakolouthos, inconsequent < an-, not + akolouthos, following: see acolyte