ORR

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See also: orr, Orr, and ǫrr

English[edit]

Noun[edit]

ORR (plural ORRs)

  1. (medicine) Initialism of overall response rate or objective response rate.

Proper noun[edit]

ORR

  1. Initialism of Office of Rail and Road, a non-ministerial government department in the United Kingdom.
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