- of, situated in, or appropriate to the inside of a house or other building: an indoor tennis court, indoor amusements
WordReference Random House Learner's Dictionary of American English © 2026
in•door /ˈɪnˌdɔr/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- located, used, or existing inside a building:indoor plumbing.
in•door
(in′dôr′, -dōr′),USA pronunciation adj.
- occurring, used, etc., in a house or building, rather than out of doors:indoor games.
- aphetic variant of within-door, origin, originally phrase within (the) door, i.e., inside the house 1705–15
Collins Concise English Dictionary © HarperCollins Publishers::
indoor /ˈɪnˌdɔː/ adj (prenominal)
'indoor' also found in these entries (note: many are not synonyms or translations):
basketball
- board
- futsal
- honesty
- korfball
- photoflood
- real tennis
- swimming bath
- air-raid shelter
- Chinese sacred lily
- circus
- environment
- field house
- galleria
- garage
- gymnasium
- house cricket
- houseplant
- indoor baseball
- indoor-outdoor
- indoors
- indoor soccer
- overcoat
- paper-white narcissus
- rabbit ears
- veiltail goldfish
- wrap
- slipper sock