plural of copper-nickel

plural of copper nose

Alternative spelling of blot one's copy book

(slang, US, intransitive) To draw attention to something about to happen or already in progress in the hope of preventing it from proceeding.

A copy of a single sent out to disc jockeys, having the B-side either blank or duplicating the A-side.

(CB radio) Perfectly clear reception.

(inorganic chemistry) The chemical compound CuO.

(inorganic chemistry) An inorganic compound with the formula CuCl₂.

Alternative spelling of copper(II) sulfate

(inorganic chemistry) The inorganic compound, CuSO₄, which forms blue crystals and is used in agriculture, dyeing, electroplating and many other applications.