indoorin‧door /ˈɪndɔː $ -ɔːr/ ●●○ adjective [only before noun] 
an indoor swimming pool the world indoor athletics championship Too much central heating can harm indoor plants.USAGE: Indoor, indoorsIndoor is an adjective and indoors is an adverb.You say: · indoor sports ✗Don't say: indoors sportsYou say: · I stayed indoors. ✗Don't say: I stayed indoor.
EXAMPLES FROM OTHER DICTIONARIES
- indoor lighting
- indoor soccer
- The hotel has a heated indoor swimming pool.
- This year, the world indoor tennis championship will take place in Paris.
- Traditionally, markets were held outdoors, but many cities in Britain now have indoor markets.
Longman Language Activatorin a building or room
· Francis and his friend were drinking tea in his room.· The movie was bad, but at least it was cool in the theater.· There isn't a comfortable chair in the house.· She had to spend a week in the hospital.
use this especially when you are comparing what is happening in a building or room with what is happening outside: · The lights were on inside the house.· Inside it was lovely and warm.· I sat outside the interview room and wondered what was going on inside.
inside a building, especially someone's home: · It was too sunny to think of staying indoors.· Some arts and crafts projects are too messy to be done indoors.
use this about things or activities that are used or that happen inside buildings, not outdoors: · The hotel has a heated indoor swimming pool.· This year, the world indoor tennis championship will take place in Paris.· Traditionally, markets were held outdoors, but many cities in Britain now have indoor markets.
COLLOCATIONS FROM OTHER ENTRIES an indoor arena
used or happening inside a building OPP outdoor: an indoor arena· There is a hall for indoor games and social functions.
· Many cottages lacked a bathroom or indoor toilet.
COLLOCATIONS FROM THE CORPUSNOUN· The majestic indoor arena holds its premier four-day championship show from Thursday 23 to Sunday 26 September.
· The Volvo Cup is the world indoor championship, but Del Mar's new stadium has been built without a roof.· His club team Norton, near Stoke in the Midlands, won the world indoor championship contested by squads from 26 countries.
· Along with all the other indoor plants that fern received lavish treatment.· Although growing well under water, they adapt to normal soil conditions and can be cultivated in flowerpots as indoor plants.· Be sure to harden off very thoroughly, as they are usually sold as indoor plants.· Few indoor plants can match the collecting urge that cacti are capable of inspiring.· Prince's Garden Centre will stock a wide range of horticultural goods, with special emphasis on top-quality indoor plants.· Many of them are cultivated in greenhouses and as indoor plants.
· Our hotel had an indoor pool, a nightclub and good food - notably, reindeer stew with cranberry sauce.· Seven purpose-built conference suits, exclusive health club and heated indoor pool and gymnasium.· The town of Andover had no legal requirement for a fence around the indoor pool.· The hotel has a new indoor pool leading directly on to the well-kept gardens with table tennis and sun-bathing lawns.· Within the park there is a large swimming pool, a separate children's pool, and an indoor pool.· Gymnasium, sauna, steam room, beauty salon, indoor pool.· When it rained they played squash or swam in the indoor pool.
· Alternatives to skiing include a leisure pool, curling and skating on the nearby lake, indoor tennis and sleigh rides.· Senators have free use of indoor tennis and basketball courts that private clubs charge $ 1, 500 a year for..· He oversees an Arena Football team and an indoor tennis team.
an indoor swimming pool the world indoor athletics championship Too much central heating can harm indoor plants.USAGE: Indoor, indoorsIndoor is an adjective and indoors is an adverb.You say: · indoor sports ✗Don't say: indoors sportsYou say: · I stayed indoors. ✗Don't say: I stayed indoor.