Complex sentence: The hysteron proteron (from the, "hýsteron próteron", "latter before") is a rhetorical device in which the first key word of the idea refers to something that happens temporally later than the second key word.
Split into simpler sentences: The hysteron proteron (from the, "hýsteron próteron", "latter before") is a rhetorical device. It occurs when the first key word of the idea refers to something that happens temporally later than the second key word.