conservatory
n. countablen. a room with glass walls and a glass roof that is attached to a house. It is usually used for growing plants or as a bright place to sit and relax.
n. a glass-enclosed room attached to a house, typically used as a greenhouse or a sunroom. In American English, the term more frequently refers to a school of music or drama.
We drink our morning coffee in the conservatory when it is sunny.
The homeowners added a large conservatory to the back of the house to showcase their collection of tropical ferns.
Architectural trends in the late nineteenth century favoured the addition of a conservatory to provide a seamless transition between the formal living areas and the manicured gardens outside.
From conserve + -atory.
Anglicized form of French conservatoire; ultimately equivalent to Etymology 1
In British English, it primarily refers to the glass structure; in American English, 'conservatorium' or 'conservatory' usually denotes a specialized arts college.