(bd ft, bf) the amount of wood contained in an unfinished board 1 in. thick, 12 in. long, and 12 in. wide (2.54 x 30.5 x 30.5 cm), abbreviated bd ft —note in trees or logs, board-foot volume is a measure of merchantability, and therefore the number of board feet in a cubic foot depends on tree diameter, amount of slab, and saw kerf; commonly, 1,000 bd ft is written as 1 MBF and 1,000,000 BF is written as 1 MMBF —see board rule, board-foot:cubic-foot ratioThis definition last updated 10/24/2008