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round-off

[round-awf, -of]Mathematics
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adjective
  1. of or relating to the act or process of rounding.
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noun
  1. an act or instance of rounding off decimal or fractional figures.
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Origin of round-off

First recorded in 1945–50; noun use of verb phrase round off
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018