photomask
/ˈfoʊtoʊˌmæsk/
noun
- A stencil-like plate used in photolithography to transfer a pattern onto a surface, especially in making computer chips.
- A single photomask can contain the design for millions of tiny transistors.
- The engineer carefully aligned the photomask before exposing the silicon wafer.
- The factory produces photomasks for the latest smartphone processors.