Rhetorical operations
In classical rhetoric, figures of speech are classified as one of the four fundamental rhetorical operations or quadripartita ratio: addition (adiectio), omission (detractio), substitution (substitutio) and transposition (transmutatio). == Classical origins == The Latin book Rhetorica ad Herennium (author unknown) from the 90s BCE, calls these four operations ἔνδεια, πλεονασμός, μετάθεσις and ἐναλλαγή.