structural:reformatting, quality:corruption, structural:expansion
Etymology

First used in English in 1539, the word parasite comes from the Medieval French parasite, from the Latinised form parasitus, from Ancient Greek παράσιτος (parasitos) 'one who eats at the table of another' in turn from παρά (para) 'beside, by' and σῖτος (sitos) 'wheat, food'. The related term parasitism appears in English from 1611.