from The Century Dictionary.
- In or as an explanatory addition; for the purpose of additional explanation: as, a clause introduced epexegetically; the infinitive may be used epexegetically.
Sorry, no etymologies found.
Sam is an instance of asyndeton (for "and put") used epexegetically:
That is what the orator calls a _knock-down_ argument; and when he wishes to be particularly convincing and eloquent, he throws at you such brick-bats and bars of iron as incomprehensibility -- epexegetically -- anthropopathically -- so fast that you have scarcely a chance to dodge one before another comes whizzing along.