dbh noun1 •Initialism of diameter at breast height, a standard method of expressing the diameter of the trunk or bole of a standing tree, measured at the supposed height above ground of an adult's breast (which varies according to local convention from 1.3 to 1.5 metres).We again found that the number of tree species in a sample of stems 20 cm dbh or larger is greater in selectively logged forest 8 years after the harvest than in nearby unlogged forest (t test, d.f. — 1999
