indoor

adjective

in·​door ˈin-ˈdȯr 

1

: of or relating to the interior of a building

2

: living, located, or carried on within a building

an indoor sport

Examples of indoor in a Sentence

Recent Examples on the Web

There, guests can dip in its indoor or outdoor pools, relax in the sauna, or book a massage for the perfect post-ski break. —Stacey Leasca, Travel + Leisure, 16 Dec. 2024

Cage-free systems can be indoor or outdoor, and both the European public and many food companies have expressed support for going cage-free. —Christine Ro, Forbes, 15 Dec. 2024

Tips for Using Grow Lights For all lighting fixtures, be careful when watering your indoor plants so splashes don't get on the lights. —Andy Wilcox, Better Homes & Gardens, 15 Dec. 2024

With four basswood paddles, two outdoor and two indoor balls, and a bag to carry everything, this set can be utilized in all four seasons. —Greg Manlove, Rolling Stone, 12 Dec. 2024

Word History

First Known Use

1711, in the meaning defined at sense 1

Phrases Containing indoor

• indoor plumbing

Kids Definition

indoor

adjective

in·​door ˌin-ˌdō(ə)r 

-ˌdȯ(ə)r

1

: of or relating to the interior of a building

2

: done, living, used, or belonging within a building

an indoor sport