When a geometry is described by a set of axioms, the notion of a line is usually left undefined (a so-called primitive object). The properties of lines are then determined by the axioms which refer to them.
Definition of mull 1: friable forest humus that forms a layer of mixed organic matter and mineral soil and merges gradually into the mineral soil beneath 2: a finely powdered solid especially in a suspension
Define culling. culling synonyms, culling pronunciation, culling translation, English dictionary definition of culling. tr.v. culled , cullÂ·ing , culls 1. To pick out from others; select. 2. To gather; collect. 3. To remove rejected members or parts from . n. Something picked...