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Meaning of basis weight

ba'sis weight"

Pronunciation: [key]
  1. the weight in pounds of a ream of paper of a basic size, usually 25 × 38 in. (63 × 96 cm) for book stock, 17 × 22 in. (43 × 55 cm) for writing stock, and 20 × 26 in. (50 × 66 cm) for cover stock. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.