3D TERMS LEARNING

3D Glossary

Learn essential 3D terms in plain English, from mesh topology and PBR materials to 3D file formats and printing. Understand the basics of 3D modeling without getting lost in technical jargon.

Last updated: October 14, 2026

START HERE

New to 3D? Read these five first.

What a model is made of, how it is optimized, how it looks, and how you export it.

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3d rendering

Rendering

3D rendering

3D rendering is the process of turning a 3D scene into a 2D image by computing how light, materials, and the camera interact.

Related terms: Vertex, Faces, Topology
💡Try: Image to 3D
3MF File

Formats

3MF File

3MF is a 3D manufacturing format designed to preserve model geometry and additional information such as materials and printing-related data.

Related terms: STL File, OBJ File
💡Try: 3D Model File Converter

A

albedo map
Materials & Textures

Albedo Map

An albedo map stores a material’s base color information without including lighting or shadow effects.
Related terms: PBR, Normal Map
💡Try: AI Texture Generator
Ambient Occlusion
Rendering

Ambient Occlusion

Ambient occlusion is a shading effect that adds soft contact shadows where surfaces meet or crease, making renders look grounded and detailed.
Related terms: HDRI, 3D rendering
💡Try: 3D File Viewer

B

Boolean
Modeling

Boolean

A Boolean operation combines or cuts two overlapping shapes through union, difference, or intersection to create new geometry during modeling.
Related terms: Mesh, Geometry, Faces
💡Try: Text to 3D

C

color space
Materials & Textures

Color Space

sRGB and linear are color spaces used in texturing: albedo maps use sRGB, while normal and roughness maps use linear to ensure materials look correct.
Related terms: Albedo Map, Normal Map
💡Try: AI Texture Generator
Cycles
Rendering

Cycles

Cycles is Blender’s path-tracing render engine, which simulates real light behavior to produce photorealistic images.
Related terms: 3D rendering, HDRI, EXR
💡Try: 3D Model File Converter

E

EXR
Rendering

EXR

An EXR file is an open image format designed to store high dynamic range data without loss, commonly used for HDRI environment maps and professional rendering output.
Related terms: HDRI, Cycles, 3D rendering
💡Try: 3D File Viewer

F

Faces

Modeling

Faces

A face is the flat surface formed when three or more vertices are connected by edges; faces are the visible building blocks of every mesh.

Related terms: Vertex, Triangulation
💡Try: 3D File Viewer
FBX File

Formats

FBX File

FBX is a 3D asset format that can store models, materials, scene hierarchy, and animation data for use in compatible software.
Related terms: GLB File, OBJ File
💡Try: Image to 3D

G

Geometry

Modeling

Geometry

Geometry describes the shape, dimensions, and spatial structure of a 3D model, unlike the textures and materials applied to its surface.
Related terms: Mesh, Vertex, Topology
💡Try: Text to 3D
glTF File

Formats

glTF File

glTF is a format for transmitting and loading 3D scenes and models, often using separate JSON, binary, and texture resources.
Related terms: GLB File, PBR
💡Try: 3D File Viewer
GLB File

Formats

GLB File

A GLB file is a binary version of glTF that can package 3D geometry, materials, textures, and other supported scene data into a single file.

Related terms: glTF File, FBX File
💡Try: 3D File Viewer

H

High Poly

Optimization

High Poly

High poly describes a 3D model featuring a massive number of polygons, allowing for highly complex geometry and the exceptionally fine surface details required for photorealistic rendering.
Related terms: Low Poly, Polygon Count
💡Try: Image to 3D
HDRI

Rendering

HDRI

An HDRI (High Dynamic Range Image) is a 360° panoramic image with a wider brightness range than standard photos, used to light 3D scenes with realistic environmental lighting.
Related terms: EXR, Ambient Occlusion
💡Try: 3D File Viewer

L

Low Poly

Optimization

Low Poly

Low poly describes a 3D model with relatively few polygons, often used for efficient rendering and stylized visuals.
Related terms: High Poly, Polygon Count
💡Try: Text to 3D
LOD

Optimization

LOD

Level of Detail (LOD) uses different versions of a 3D model with varying complexity based on viewing distance or performance needs.
Related terms: Polygon Count, Low Poly
💡Try: 3D Model File Converter

M

mesh
Modeling

Mesh

A mesh is a 3D object’s surface structure, made up of vertices, edges, and faces that define its shape and form the foundation for modeling, texturing, and rendering.
Related terms: Vertex, Faces, Topology
💡Try: Image to 3D
Metallic Map

Materials & Textures

Metallic Map

A metallic map is a grayscale PBR texture that marks which parts of a surface behave as metal, so reflections and color response stay physically accurate.

Related terms: Roughness, PBR
💡Try: AI Texture Generator

N

Normal Map

Materials & Textures

Normal Map

A normal map encodes surface direction information to simulate fine details in lighting without requiring additional geometric complexity.

Related terms: Albedo Map, Roughness
💡Try: AI Texture Generator

O

OBJ File

Conversion

OBJ File

OBJ is a geometry-focused 3D file format that can describe vertices, faces, texture coordinates, and normals, with materials commonly referenced separately.

Related terms: STL File, PLY File
💡Try: 3D Model File Converter

P

PBR

Materials & Textures

PBR

Physically Based Rendering (PBR) is a rendering approach that uses material properties to simulate how surfaces interact with light.
Related terms: Albedo Map,  Roughness
💡Try: AI Texture Generator
PLY file

Formats

PLY File

PLY is a format for storing 3D data such as polygon meshes or point clouds, including properties like vertex colors when present.
Related terms: OBJ File,  Vertex
💡Try: 3D Model File Converter
Polygon Count

Optimization

Polygon Count

Polygon count is the number of polygons used to represent a 3D model’s surface and is one measure of its geometric complexity.

Related terms: Low Poly, High Poly
💡Try: Image to 3D

R

Retopology

Conversion

Retopology

Retopology reorganizes a 3D model’s mesh into a new topology that may be easier to edit, animate, or use in production.
Related terms: Topology, Polygon Count
💡Try: Image to 3D
Roughness

Materials & Textures

Roughness

Roughness is a PBR property that controls how sharp or blurred reflections appear on a surface, from mirror-smooth to fully matte.
Related terms: Metallic Map, PBR
💡Try: AI Texture Generator

S

STL File

Formats

STL File

STL is a widely used 3D printing format that represents a model’s surface using triangular facets, typically without color or material information.
Related terms: 3MF File, Triangulation
💡Try: Image to 3D

T

Topology

Optimization

Topology

Topology describes how the vertices, edges, and faces of a 3D mesh connect to form its surface, affecting its structure and deformation.
Related terms: Mesh, Retopology
💡Try: Image to 3D
Triangulation
Modeling

Triangulation

Triangulation divides polygonal surfaces into triangles, a common geometric representation used in 3D graphics and rendering.
Related terms: Mesh, Faces, STL File
💡Try: 3D Model File Converter

U

UV Mapping

Materials & Textures

UV Mapping

UV mapping assigns coordinates to a 3D model’s surface so that a 2D texture can be positioned correctly on the model.
Related terms: Albedo Map, Normal Map
💡Try: AI Texture Generator
USDZ File

Formats

USDZ File

USDZ is a packaged 3D asset format commonly used to share 3D content and support augmented reality experiences on compatible platforms.
Related terms: FBX File, PBR
💡Try: Image to 3D

V

Vertex

Modeling

Vertex

A vertex is a point in 3D space that helps define the position and shape of a model’s geometry.

– Related terms: Mesh, Faces, Triangulation
– Try it yourself: 3D File Viewer

Related terms: 3D rendering, HDRI
💡Try: 3D Model File Converter

W

WebGL

Rendering

WebGL

WebGL is a browser graphics standard that displays interactive 3D content on web pages in real time, without plugins — the technology behind online 3D viewers.
Related terms: 3D rendering, GLB File
💡Try: 3D File Viewer

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Help Center

3D Glossary FAQs

Find answers to common questions about 3D terminology, beginner learning, and using AI 3D generators.

A 3D glossary is a collection of terms used in 3D modeling, rendering, texturing, animation, and 3D printing. It explains technical concepts such as meshes, topology, UV mapping, PBR materials, and file formats in simple language, helping beginners understand how 3D models are created, optimized, and used.

3D terminology covers several broad areas, including 3D modeling, materials and textures, rendering, optimization, and file formats. Together, these concepts help you understand how 3D models are created, improved, and used in different projects.

No. Most AI 3D generators let you create models from images or text without requiring prior 3D modeling knowledge. However, understanding a few basic terms can help you choose the right output format, evaluate model quality, adjust geometry, and prepare files for applications such as Blender, game engines, or 3D printers.

If you are just getting started, focus on mesh, polygon count, texture maps, and file formats first.

We review the glossary periodically to improve existing definitions and add useful terminology as 3D modeling tools, file formats, and workflows evolve. The “Last updated” date at the top of this page indicates the most recent page update.

If you're new to 3D, check out the Start Here guide near the top of this page. It highlights five essential terms to help you get started.