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Meaning of dimension lumber

dimen'sion lum"ber

Pronunciation: [key]
  1. building lumber cut to standard or specified sizes.
  2. sawed lumber from 2 to 5 in. (5 to 12.7 cm) thick and from 4 to 12 in. (10.2 to 30.5 cm) wide. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.