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n.1.A photographic picture copied from the negative on glass; a photographic transparency.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
the resulting process, which they patented in 1850s, coming known as the hyalotype." (5) After creating the image on glass, the image was usually masked by opaque paper around the edge, to highlight a portion of the image, not unlike the process that photographers use in printing photographic images.
The hyalotype lantern slide was created in one of two processes, either contact or reduction prints.
The use of hyalotypes with the Magic Lantern projector resulted in the informal, yet better-known name lantern slides.