hothouse Definition

1. A greenhouse which is kept warm for growing tender or tropical plants.

Thesaurus: conservatory, glasshouse, greenhouse, nursery.
2. Any type of heated room used for drying something, especially one where pottery is placed before going into the kiln.
3. Any establishment promoting a rapid development of skills, ideas, etc.
4. Said of a plant: suitable only for growing in a greenhouse; too delicate to exist in normal outdoor or indoor conditions.