round up

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round up (third-person singular simple present rounds up, present participle rounding up, simple past and past participle rounded up)

1. (transitive) To gather (cattle) together by riding around them.
2. (transitive, idiomatic) To collect or gather (something) together.

   The city hall needs to round up all the wrongly parked bikes across the city.

   1. (transitive) To arrest or detain a group of people without individualized suspicion or cause, often as a form of targeted persecution.

      During the Holocaust, the Nazis rounded up Jews into ghettos and concentration camps.

      Major Strasser has been shot. Round up the usual suspects.

3. (transitive, arithmetic) To round (a number) to the smallest integer that is not less than it, or to some other greater value, especially a whole number of hundreds, thousands, etc.

   The total is $24,995 — let's round up to $25,000.

• (arithmetic): round down

• rounder-upper

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