Independent buying guides for reptile terrariums

Reptile Terrarium Glossary: 14 Terms Explained

The words that show up in reptile terrarium specs, reviews and how-to guides, explained without jargon.

Arboreal
Tree-dwelling species that need tall enclosures with climbing branches.
Related: Best Tall Arboreal Enclosures for Climbing Species
Basking spot
The hottest area under a basking bulb, set to the species' needs.
Related: Best Basking Bulbs for Reptile Heat Gradients
Bioactive enclosure
A living setup with soil, plants and cleanup crews like springtails and isopods that break down waste.
Related: Best Bioactive Soil Mixes for Terrariums
Brumation
A slowed, reptile version of hibernation some species go through in cooler months. Discuss it with an exotics vet.
Calcium dusting
Coating feeder insects with calcium supplement to prevent metabolic bone disease.
Related: Best Calcium and Supplements for Reptiles
Ceramic heat emitter
A heat source that produces no light, used for night heat when needed.
Related: Best Ceramic Heat Emitters for Night and Ambient Heat
Deep heat projector
A heat source emitting infrared that warms deeply, similar to sunlight.
Related: Best Deep Heat Projectors for Terrariums
Hygrometer
A gauge for humidity. Digital units with probes are more accurate than dial gauges.
Related: Best Reptile Thermometers and Hygrometers
Quarantine
Keeping a new animal separate for weeks to watch for illness before joining other animals.
Related: Best Quarantine Tubs for New Reptiles and Amphibians
Terrestrial
Ground-dwelling species where floor space matters more than height.
Thermal gradient
A warm side and a cool side in an enclosure so reptiles can regulate body temperature.
Thermostat
A controller that stops heat sources from overheating. Every heat source should have one.
Related: Best Thermostats for Reptiles
UV index
A measure of UVB strength at the animal's position, checked with a meter.
Related: Best UV Index Meters for Checking Reptile Lighting
UVB
Ultraviolet light many reptiles need to make vitamin D3 and absorb calcium. Bulbs weaken with time and need regular replacement.
Related: Best UVB Bulbs for Reptile Enclosures