zinco-

from The Century Dictionary.

• noun A plate in relief for printing, made by etching with acid a design on prepared zinc.
• To etch with acid a zinc plate containing on its surface a design intended for printing by typographic methods.

from the GNU version of the Collaborative International Dictionary of English.

• A combining form from zinc; in chemistry, designating zinc as an element of certain double compounds. Also used adjectively.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• prefix containing, or combined with, or using zinc