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summatory

adjective sum·ma·to·ry \ ˈsəməˌtōrē \
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Definition of summatory

: of, relating to, or serving as a summation
  • his endings have that glowing summatory quality
  • —Clifton Fadiman

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Origin and Etymology of summatory

Medieval Latin summatus (past participle of summare to sum) + English -ory

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