ream ream [riːm] noun [countable]
1. reams [plural] a large amount of writing or information, usually on paper:
• They have to wade through reams of data.
2. a pack containing 500 pieces of paper
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ream UK US /riːm/ noun
► [C] WORKPLACE, MEASURES 500 sheets of printing or writing paper: »
Can you order a ream of printer paper?
Financial and business terms. 2012.