Plaque
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Leslie wrote, “This weekend
I’ve seen references to plaques commemorating military service, and for the
first time I noticed that it’s the same spelling that my dentist uses for the bacterial
scaling that gets deposited on my teeth. How on earth are they connected?”
The word plaque came into
English through a French word that meant a flat plate or tablet, and many of
the subsequent uses of the word are a reference to that shape or appearance.
At various times, plaque
was
·
a badge
signifying rank in an honorary order,
·
a decorated
ornamental metal or porcelain tablet meant to be used as a wall decoration or
inset into the back of a piece of furniture,
·
a plate affixed
to a monument or building describing its history,
·
a counter or
chip used in gambling,
·
a flat or
slightly elevated area of abnormal tissue,
·
a thickening of
fibrous tissue in an artery,
·
a patch of hard
material deposited on the teeth,
·
an area of
degeneration in the cerebral cortex found in Alzheimer’s patients,
·
a clear area on
the cellular level produced by a virus.
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