CEA DEFINITIONS AND BIOLOGY

Understanding the Language of CEA

Glossary for CEA Terms

Explore Greenhub’s cross-disciplinary glossary of Controlled Environment Agriculture (CEA) — a growing knowledge base for greenhouse growers, indoor farm managers, researchers, breeders, and agtech innovators. Here you’ll find concise definitions of key vertical farming and plant science terms that help create a shared language across the CEA industry.

L

Labor Registration Data

Worker hours, task efficiency, OEE (overall equipment effectiveness). (Digital Control &Software Metric)

Layer Lighting (Rack Lighting)

Controlled per shelf in vertical farms, often linked to recipe management (growth phase-specific). 

Layer Lighting / Multilayer Lighting

Lighting applied at each shelf level in a vertical farming rack system. 

Leaf Area (LA)

Total surface of leaves. 

Leaf Area Index (LAI)

Total leaf area relative to ground area.

Leaf Temperature

Actual surface temperature of leaves. Measured by IR sensors, indicates plant stress. 

Leaf Type / Fruit Type

Morphology of the edible part (e.g., romaine vs. butterhead, cherry vs. beefsteak tomato).Helps adjust light,...

Life Cycle Assessment (LCA)

Environmental footprint analysis. 

Light Deprivation Curtains

Blackout curtains used to control photoperiod and crop flowering. 

Light Distribution / Uniformity

The evenness of light across the growing area. Poor distribution causes uneven growth and yieldvariability.  

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