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pyrogen (n.)
Related entries & more 1858, as a proposed word for "electricity considered as a material substance possessing weight," from pyro- + -gen. Meaning "fever-producer, substance which, introduced into the blood, induces fever" is from 1896. Related: Pyrogenic. Greek pyrogenes meant "born in fire, wrought by fire" (compare pyrogenesis).
Saran U.S. trademark name for PVC used as a cling-film, 1940, by Dow Chemical Company.
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preview (n.)
Related entries & more "a foretaste," 1880, from preview (v.); specifically "a showing of a book, film, etc. before public release" by 1920.
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