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
Dictionary entry overview: What does cull mean? â¢ CULL (noun) The noun CULL has 1 sense: 1. the person or thing that is rejected or set aside as inferior in quality Familiarity information: CULL used as a noun is very rare. â¢ CULL (verb) The verb CULL has 2 senses: 1. remove something that has been rejected 2. look for and gather Familiarity information: CULL used as a verb is rare.