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- Rocks & EarthVertical exaggeration
Displaying elevation differences at an enlarged scale relative to horizontal distances in a terrain view or profile. An exaggeration factor of 3 makes a given relief appear three times as tall relative to the horizontal scale. It helps reveal subtle terrain; record the factor before judging slope or landform shape from the display.
Guide: Reading 3D Maps: Terrain, Tilt, and Perspective
Reference: Esri: elevation surfaces and vertical exaggeration
Link to this term- NetworksVLAN
Virtual local area network: a logical separation of a switched network into distinct link-layer broadcast domains. VLAN configuration and routing or firewall policies together determine how devices in different VLANs can communicate.
Read the guide: IEEE 802 Explained: Read Ethernet, Wi-Fi, and VLAN Specifications
Reference: IEEE 802.1Q bridges and VLANs
Link to this term- NetworksVoIP
Voice over Internet Protocol: carrying voice communication as data over IP networks. Call quality depends on the endpoints, network path, delay and packet delivery as well as the service.
Related coverage: VoIP Guides: Calls, Equipment, SIP, and Operations
Link to this term- NetworksVoLTE
Voice over LTE: an operator voice service carried as IP packets over an LTE mobile network using IMS. The handset, its configuration and the operator must support the service together. A phone that connects for LTE data can still lack the supported voice setup required for calls.
Guide: 3G phones: compatibility, shutdowns and useful reuse
Reference: GSMA: VoLTE
Link to this term- Computers & specificationsVRAM
Video RAM: memory used to hold graphics resources such as textures and frame buffers, as well as data for supported GPU computing tasks. A discrete graphics card typically has dedicated video memory. Capacity helps determine whether a workload fits; compare memory bandwidth, the GPU and software support alongside the capacity figure.
Guide: Choosing a Graphics Card: Workloads, VRAM, Power, and Fit
Reference: AMD: video memory and graphics workloads
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A starting point for understanding
Each entry gives a concise meaning and, where useful, a distinction or practical example. Topic labels identify the context; the same acronym can have several meanings. Historical names remain useful when reading older coverage.
Follow the linked Yenra guides for fuller explanations and the reference links for supporting documentation. Health, technical and regulatory terms describe concepts; individual decisions depend on the applicable evidence, equipment and circumstances.
Collection updated October 13, 2026. Full glossary · AI Glossary