pho·to·mask
| \ ˈfō-tō-ˌmask
\
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plural photomasks
Definition of photomask
: a pattern of opaque material used to shield selected areas of a surface (as of a semiconductor) in deposition or etching (as in producing an integrated circuit) : mask sense 3d
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“Photomask.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photomask. Accessed 17 May. 2021.
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Time Traveler for photomask
The first known use of photomask was in 1963
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