A branch or branching.
Greek klados, a branch or shoot.
A set of terms in biology refers to a method of classifying organisms according to physical or genetic characteristics they share with common ancestors; the theory is cladistics, adherence to the theory is cladism, and a cladogram is a diagram of the relationships concerned. A cladode (also known as a cladophyll or phylloclade) is a flattened leaf-like stem that can photosynthesize; a cladoceran is a crustacean, a water-flea, so called because it has a bivalve shell from which the head and antennae branch.
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