1.abbr.qr. or q. A set of 24 or sometimes 25 sheets of paper of the same size and stock; one twentieth of a ream. 2. A collection of leaves of parchment or paper, folded one within the other, in a manuscript or book.
ETYMOLOGY:
Middle English quayer, four double sheets of paper, from Old French quaer, from Vulgar Latin *quaternus, from Latin quatern, set of four, four each, from quater, four times. See kwetwer- in Appendix I.
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