A 3D printing glossary defines important terms for understanding 3D printing technology. Some key terms include: 3D printer, which creates 3D objects from digital files in an additive process; filament, the plastic material used in FDM/FFF printers; slicer software, which converts 3D models into code for the printer; and print bed, the surface where printed objects are formed. The glossary provides concise definitions for many common 3D printing techniques, file formats, materials, and other important concepts for learning about the 3D printing field.