electrotype

noun

1. a facsimile, for use in printing, of a block of type, an engraving, or the like, consisting of a thin copper or nickel shell deposited by electrolytic action in a wax, lead, or plastic mold of the original and backed with lead alloy.
2. electrotypy.

verb (used with object), e·lec·tro·typed, e·lec·tro·typ·ing.

3. to make an electrotype of.

noun

1. a duplicate printing plate made by electrolytically depositing a layer of copper or nickel onto a mould of the originalSometimes shortened to: electro

verb

2. (tr) to make an electrotype of (printed matter, illustrations, etc)