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.

P

P-value

Probability that observed differences occurred by chance; used to assess significance. 

Pad & Fan Cooling

Cooling by pulling air through wetted pads (common in hot climates). 

Pad & Fan Differential Pressure

Measurement of airflow through cooling pads. 

Pathogen

Disease-causing organism (fungus, bacteria, virus) affecting plant health. 

Peak Shaving / Demand Response

Adjusting energy use during high-demand periods to reduce costs and stress on the grid. 

Pest

Organism (insect, mite, or nematode) that can cause damage to crops. 

pH

Acidity/alkalinity of nutrient solution. 

Phenology

Plant growth stages (seedling, vegetative, flowering, harvest). 

Phenotype

Observable traits (size, color, yield). 

Phenotypic Plasticity

Ability of plants to adapt traits to environment. 

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