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Online Etymology Dictionary. The Online Etymology Dictionary or Etymonline, sometimes abbreviated as OED (not to be confused with the Oxford English Dictionary, which the site often cites), is a free online dictionary that describes the origins of English words, written and compiled by Douglas R. Harper. [ 1]
an online tool for visualizing, annotating and managing phylogenetic trees. IcyTree [ 4] Client-side Javascript SVG viewer for annotated rooted trees. Also supports phylogenetic networks. Iroki [ 5] Automatic customization and visualization of phylogenetic trees. iTOL - interactive Tree Of Life [ 6]
A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree, although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the ...
Category. v. t. e. A phylogenetic tree, phylogeny or evolutionary tree is a graphical representation which shows the evolutionary history between a set of species or taxa during a specific time. [ 1][ 2] In other words, it is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities ...
The diagram of a simple sentence begins with a horizontal line called the base. The subjectis written on the left, the predicateon the right, separated by a vertical bar that extends through the base. The predicate must contain a verb, and the verb either requires other sentence elements to complete the predicate, permits them to do so, or ...
Etymological dictionaries are the product of research in historical linguistics. For many words in any language, the etymology will be uncertain, disputed, or simply unknown. In such cases, depending on the space available, an etymological dictionary will present various suggestions and perhaps make a judgement on their likelihood, and provide ...
t. e. In biology, phylogenetics ( / ˌfaɪloʊdʒəˈnɛtɪks, - lə -/) [ 1][ 2][ 3] is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by phylogenetic inference, methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences ...
Tree topology, a topology based on a hierarchy of nodes in a computer network. Tree diagram (physics), an acyclic Feynman diagram, pictorial representations of the mathematical expressions governing the behavior of subatomic particles. Outliners, a common software application that is used to generate tree diagrams. Network diagram.