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mesh A tessellated, or subdivided object type that is defined by faces, edges, and vertices.
Mesh can be smoothed to achieve a more rounded appearance and creased to introduce
ridges. Before , only the less modifiable polygon and polyface mesh was available.
mirror To create a new version of an existing object by reflecting it symmetrically with
respect to a prescribed line or plane. (MIRROR)
mode A software setting or operating state.
model A two- or three-dimensional representation of an object.
model space One of the two primary spaces in which objects reside. Typically, a geometric
model is placed in a three-dimensional coordinate space called model space. A final layout
of specific views and annotations of this model is placed in paper space. See also paper space.
(MSPACE)
model viewports A type of display that splits the drawing area into one or more adjacent
rectangular viewing areas. See also layout viewports, TILEMODE, and viewport. (VPORTS)
multileader A leader object that creates annotations with multiple leader lines.
named object Describes the various types of nongraphical information, such as styles and
definitions, stored with a drawing. Named objects include linetypes, layers, dimension styles,
text styles, block definitions, layouts, views, and viewport configurations. Named objects
are stored in definition (symbol) tables.
named objects, dependent See dependent named objects (in xrefs).
named view A view saved for restoration later. (VIEW)
node An object snap specification to locate points, dimension definition points, and
dimension text origins.
non-associative dimension A dimension that does not automatically change as the
associated geometry is modified. Controlled by the DIMASSOC system variable. See also
associative dimension and exploded dimension.
normal A normal is a vector that defines which way a face is pointing. The direction of the
normal indicates the front, or outer surface of the face.
noun-verb selection Selecting an object first and then performing an operation on it rather
than entering a command first and then selecting the object.
NURBS For nonuniform rational B-spline curve. A B-spline curve or surface defined by a series
of weighted control points and one or more knot vectors. See also B-spline curve.
NURBS surface Surfaces that are have control vertices in the U and V directions. NURBS
surfaces cannot be associative. See also procedural surface and generic surface.
1612 | Chapter 51 Glossary