chemical

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But as the chemical has been added to drinking water and ingested by millions of Americans each day, scientists and activists are warning that both adults - and kids in particular - are getting far too much fluoride, translating to potentially severe health problems.

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Definitions (42)

Toggle American Heritage definitions American Heritage Dictionary (4)

  1. adjective Of or relating to chemistry.
  2. adjective Of or relating to the properties or actions of chemicals.
  3. noun A substance with a distinct molecular composition that is produced by or used in a chemical process.
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Examples (33)

  • In time we learned that the chemical was a cholinesterase inhibitor. —  FSF,July2008
  • "Studies have established that the chemical is a potent thyroid toxin that may interfere with fetal and infant brain development," it said. —  Latest Articles
  • "Studies have established that the chemical is a potent thyroid toxin that may interfere with fetal and infant brain development," —  Latest Articles
  • Marc Bellaud, who presented the proposal on behalf of the preservation group, said the chemical has been approved by both the state and federal environmental agencies, and is used widely across the country in lakes and rivers. —  Berkshire Eagle Most Viewed
  • "Not knowing immediately what the chemical was and all of that, precautions were taken," he said. —  Blog updates
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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Obsolete chimical, from chimic, alchemist, from New Latin chimicus, from Medieval Latin alchimicus, from alchymia, alchemy; see alchemy.

Toggle Century etymologies Century Dictionary (1)

  1. Earlier chymical; from chemic + -al. See chemistry.
 

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/ˈkɛmɪkəl/
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