Medical Device
pacifier Audio
pac·i·fi·er [ pas-uh-fahy-er ]
Definitions related to pacifiers:
  • Devices that babies can suck on when they are not feeding. The extra sucking can be comforting to the babies and pacify them. Pacifiers usually are used as a substitute for the thumb in babies who suck on their thumb or fingers almost constantly.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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