Study old diary as part of basic thematic study

Wikipedia Word definitions in Wikipedia
Dendrology (, dendron , "tree"; and , -logia , science of or study of ) or xylology (, ksulon , "wood") is the science and study of wooded plants ( trees , shrubs , and lianas ), specifically, their taxonomic classifications. There is no sharp boundary ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1708, from dendro- + -ology .

Wiktionary Word definitions in Wiktionary
n. the study of trees and other woody plants

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
dendrology \den*drol"o*gy\, n. [Gr. de`ndron tree + -logy: cf. F. dendrologie.] the branch of botany studying trees and shrubs; the natural history of trees. A discourse or treatise on trees. [1913 Webster] -- den`dro*log"ic*al , a. -- den`dro*log"ic , ...