| 释义 | 
		Definition of fluoride in English: fluoridenoun ˈflʊərʌɪdˈflɔːrʌɪd 1Chemistry  A compound of fluorine with another element or group, especially salt of the anion F⁻ or an organic compound with fluorine bonded to an alkyl group.  Example sentencesExamples -  What Sanpaolesi had aimed to do was to consolidate the deteriorated surface of the marble by forming a layer of calcium, zinc and magnesium fluorides and silica gel on the marble surface.
 -  Fluxes containing fluorides, chlorides, silica, and borax provide both covering and cleaning, along with the ability to dissolve and collect these objectionable oxide skins.
 -  Highly substituted alkyl fluorides, perfluoroalkanes, are now used as artificial blood substitutes because of their oxygen transporting properties.
 -  Many elements form fluorides, however, that cannot be labeled covalent or ionic; these halides exhibit the characteristics of polymeric compounds.
 -  Aluminum is derived in a process that produces air pollutants (e.g., particulates and gaseous fluorides, sulfur dioxide, particulate matter).
 
 2mass noun Sodium fluoride or another fluorine-containing salt added to water supplies or toothpaste in order to reduce tooth decay.  Example sentencesExamples -  Lancaster City Council heard that water companies could be forced to add fluoride to drinking supplies under moves to prevent tooth decay.
 -  There is overwhelming evidence that fluoride can substantially reduce tooth decay.
 -  Some weeks ago we learned that a vote in Parliament had found two of our members in favour of adding fluoride to our water supply and one against.
 -  The undersigned strongly support the introduction fluoride into the water supply at the earliest possible opportunity.
 -  AN MP claims the government's backing for putting fluoride in water supplies could be a recipe for murder - with a cup of tea.
 -  Both dentists and scientists agree adding fluoride to the water supply is a safe, effective way to help protect teeth, especially young teeth.
 -  Authority members backed the plan but after months of talks Yorkshire Water decided against adding fluoride to supplies.
 -  A study of 25 popular brands of bottled water found that they were unlikely to contain enough fluoride to protect children's teeth.
 -  Children with fissure sealants still need to brush their teeth with fluoride toothpaste.
 -  Like all the other dentists, Lester had learnt in dental school that fluoride reduces tooth decay.
 -  Use fluoride toothpaste as fluoride makes teeth stronger and more resistant to acid attacks.
 -  The only way to discover whether people wanted fluoride in their water supplies was to hold mini referendums on the issue, he claimed.
 -  Humberside Area Health Authority was to investigate the possibility of introducing fluoride into all water supplies in the county.
 -  The company is capable of adding fluoride to water supplies, but does not want to have to make the decision whether to or not.
 -  However, in the mid-1990s, it began to question the wisdom of putting fluoride in the water supply.
 -  A ‘yes’ vote would allow health authorities to make water companies add fluoride to supplies in areas where it is supported.
 -  Peers voted in favour of smoothing the way for water companies to put fluoride in their supplies when the Bill was debated in the Lords during the summer.
 -  You may have heard that the addition of fluoride to the water supply is dangerous and damaging.
 -  The Minister for Health is dosing our tap water with chemical fluoride to supposedly give us better teeth.
 -  Request local water company to supply water with optimum fluoride level.
 
 
 Origin   Early 19th century: from fluorine + -ide.    Definition of fluoride in US English: fluoridenoun Chemistry 1A compound of fluorine with another element or group, especially a salt of the anion F⁻ or an organic compound with fluorine bonded to an alkyl group.  Example sentencesExamples -  Highly substituted alkyl fluorides, perfluoroalkanes, are now used as artificial blood substitutes because of their oxygen transporting properties.
 -  Fluxes containing fluorides, chlorides, silica, and borax provide both covering and cleaning, along with the ability to dissolve and collect these objectionable oxide skins.
 -  Many elements form fluorides, however, that cannot be labeled covalent or ionic; these halides exhibit the characteristics of polymeric compounds.
 -  What Sanpaolesi had aimed to do was to consolidate the deteriorated surface of the marble by forming a layer of calcium, zinc and magnesium fluorides and silica gel on the marble surface.
 -  Aluminum is derived in a process that produces air pollutants (e.g., particulates and gaseous fluorides, sulfur dioxide, particulate matter).
 
 - 1.1 Sodium fluoride or another fluorine-containing salt added to water supplies or toothpaste in order to reduce tooth decay.
 Example sentencesExamples -  Some weeks ago we learned that a vote in Parliament had found two of our members in favour of adding fluoride to our water supply and one against.
 -  AN MP claims the government's backing for putting fluoride in water supplies could be a recipe for murder - with a cup of tea.
 -  Humberside Area Health Authority was to investigate the possibility of introducing fluoride into all water supplies in the county.
 -  Request local water company to supply water with optimum fluoride level.
 -  The undersigned strongly support the introduction fluoride into the water supply at the earliest possible opportunity.
 -  A study of 25 popular brands of bottled water found that they were unlikely to contain enough fluoride to protect children's teeth.
 -  Peers voted in favour of smoothing the way for water companies to put fluoride in their supplies when the Bill was debated in the Lords during the summer.
 -  There is overwhelming evidence that fluoride can substantially reduce tooth decay.
 -  You may have heard that the addition of fluoride to the water supply is dangerous and damaging.
 -  Lancaster City Council heard that water companies could be forced to add fluoride to drinking supplies under moves to prevent tooth decay.
 -  The company is capable of adding fluoride to water supplies, but does not want to have to make the decision whether to or not.
 -  Both dentists and scientists agree adding fluoride to the water supply is a safe, effective way to help protect teeth, especially young teeth.
 -  The Minister for Health is dosing our tap water with chemical fluoride to supposedly give us better teeth.
 -  Use fluoride toothpaste as fluoride makes teeth stronger and more resistant to acid attacks.
 -  Authority members backed the plan but after months of talks Yorkshire Water decided against adding fluoride to supplies.
 -  However, in the mid-1990s, it began to question the wisdom of putting fluoride in the water supply.
 -  A ‘yes’ vote would allow health authorities to make water companies add fluoride to supplies in areas where it is supported.
 -  The only way to discover whether people wanted fluoride in their water supplies was to hold mini referendums on the issue, he claimed.
 -  Children with fissure sealants still need to brush their teeth with fluoride toothpaste.
 -  Like all the other dentists, Lester had learnt in dental school that fluoride reduces tooth decay.
 
  
 
 Origin   Early 19th century: from fluorine + -ide.     |