A greenhouse in an English garden.
The definition of a greenhouse is a building made of glass panes in which heat and humidity can be regulated in order to grow plants.
An example of a greenhouse is where vegetables can be grown when the outside weather is below freezing.
a building made mainly of glass, in which the temperature and humidity can be regulated for the cultivation of delicate or out-of-season plants
of or contributing to the greenhouse effect: greenhouse gases
- A structure, primarily of glass or sheets of clear plastic, in which temperature and humidity can be controlled for the cultivation or protection of plants.
- Slang A clear plastic bubble or shell covering part of an aircraft.
- In the UK, greenhouse is the term used domestically. Large commercial greenhouses are called glasshouses by professionals.