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cen·tum | \ ˈken-təm 
, -ˌtu̇m \
, -ˌtu̇m \Definition of centum
: of, relating to, or constituting an Indo-European language group in which the palatal stops did not in prehistoric times become palatal or alveolar fricatives — compare satem
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Time Traveler for centum
The first known use of centum was in 1893
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