A tax charged on goods produced within the country (as opposed to customs duties, charged on goods from outside the country).
verb
To cut out; to remove.
To impose an excise tax on something.
sextic
sextic
adj
(mathematics) Of the sixth degree or order.
noun
(mathematics) An algebraic equation or function of the sixth degree, e.g. a polynomial of degree 6; a curve surface etc. describing such an equation or function, especially a quantic of the sixth degree.