Publicity
来自Big Physics
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late 18th century: from French publicité, from public ‘public’ (see public).
wiktionary
From French publicité, From Medieval Latin pūblicitātem, accusative singular of pūblicitās, from Latin pūblicus(“public, general”).
Morphologically public + -ity
etymonline
publicity (n.)
1791, "state or condition of being public or open to the observation and inquiry of a community," from French publicité (1690s), from Medieval Latin publicitatem (nominative publicitas), from Latin publicus (see public (adj.)). Sense of "a making (something) known, an exposure to the public" is from 1826, shading by c. 1900 into "advertising, the business of promotion." Publicity stunt is recorded by 1908.
