| Term | Definition |
| arrowhead | part of a leader that points to an object |
| Bezier curve | curve defined by endpoints and tangent lines |
| chamfer | diagonal corner of an object |
| class | category of objects that can be manipulated as a group |
| constraint | tool that limits drawing to a particular point |
| coordinates | system of numbers used to locate a point |
| ellipse | entity defined by a major axis, minor axis, and centerpoint |
| extension line | the line that extends from a measured object to the dimension line |
| fill | object defined by a series of points that fills the defined area with solid color |
| hatch | object defined by a series of points |
| locus | drawing object with a single reference point |
| macro | sequence of commands recorded and saved for easy playback |
| manual entry | the process of entering points manually by typing coordinates |
| nested | objects inside of other objects |
| layer | a property of any drawing object |
| offset | the distance between two objects |
| ortho | objects placed horizontally or vertically within a drawing |
| pan | altering the drawing view |
| polar coordinates | system of numbers used to locate an point |
| polygon | object with three or more sides |
| polyline | object composed of two or more lines with continuous endpoints |
| primitive | simplest drawing entities: point, line,arc... |
| prompt | message located on program status line |
| radial copy | editing command that makes many copies of objects |
| real scale | objects are drawn at full scale, 1:1 |