the GNU version of the Collaborative International Dictionary of English
n. the branch of botany studying trees and shrubs; the natural history of trees.
n. A discourse or treatise on trees.
The Century Dictionary and Cyclopedia
n. A discourse or treatise on trees; the natural history of trees. Also dendrography.
Word Usage
"Street -- [which, in imitation of Von Troil's famous chapter on the snakes of Lapland, the reader may accept, if he pleases, as a complete course of lectures on the "dendrology" of Oxford Street.]"