/ forestry /
diameter at breast height
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for dbh
More than one hundred elms of DBH two feet or more have been recorded.
Scattered through the woodlands are occasional mature hickories of DBH 18 inches or more.