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- (botany) diameter at breast height, a standard method of expressing the diameter of the trunk or bole of a standing tree. The diameter is measured at the height of an adult's breast.
- 1999 June 4, Douglas Sheil et al., “Tree Species Diversity in Logged Rainforests”, in Science, volume 284, number 5420, DOI:10.1126/science.284.5420.1587a:
- 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.