The meaning of INDOOR is of or relating to the interior of a building. How to use indoor in a sentence.

INDOOR meaning: 1. happening, used, or existing inside a building: 2. happening, used, or existing inside a…. Learn more.

INDOOR definition: occurring, used, etc., in a house or building, rather than out of doors. See examples of indoor used in a sentence.

Dec 21, 2019 · What is the difference between indoors and indoor? Indoors is an adverb. If you go indoors, you go into a building. It started to rain, so we went indoors. If something happens indoors, it …

Indoor environment, in building science, traditionally includes the study of indoor thermal environment, indoor acoustic environment, indoor light environment, and indoor air quality

Define indoor. indoor synonyms, indoor pronunciation, indoor translation, English dictionary definition of indoor. adj. 1. Of, situated in, or intended for use in the interior of a building: an indoor pool; indoor …

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Nov 22, 2025 · indoor (not comparable) Situated in, or designed to be used in, or carried on within, the interior of a building. antonym Antonym: outdoor These fireworks are not for indoor use!

indoor in American English (ˈɪnˌdɔr, -ˌdour) adjective occurring, used, etc., in a house or building, rather than out of doors

Use the adjective indoor to describe something that happens or is used inside a building or house. Your indoor furniture is probably a little fancier than your plastic outdoor furniture.