greenhouse

1 of 2

noun

green·​house ˈgrēn-ˌhau̇s 

plural greenhouses

1

: a usually permanent climate-controlled structure enclosed (as by glass or multiple layers of plastic) and used usually year-round for the cultivation or protection of tender plants

2

: a clear plastic shell (such as a canopy) covering a section of an airplane

also : a compartment (as for a bombardier) enclosed by such a shell

greenhouse

2 of 2

adjective

: of, relating to, contributing to, or caused by the greenhouse effect

greenhouse warming

greenhouse gases

Synonyms

Noun

• conservatory
• glasshouse [chiefly British]
• hothouse

Examples of greenhouse in a Sentence

Noun

needed to move the plants into the greenhouse before the first frost killed them

Recent Examples on the Web

Noun

Also on tap are a large poolside cabana warmed by a fireplace and four-stall horse barn, plus a professional-size riding arena, greenhouse and an attached garage that can accommodate up to four vehicles. —Wendy Bowman, Robb Report, 23 Apr. 2024

Related article The wild, remote island at the heart of a billion-dollar industry Alchemical ambience Across the courtyard, the new still room resembles a vast industrial greenhouse with four shiny new copper stills as its exotic plants. —Angus MacKinnon, CNN, 13 Apr. 2024

Word History

First Known Use

Noun

1664, in the meaning defined at sense 1

Adjective

1974, in the meaning defined above

Phrases Containing greenhouse

• greenhouse effect
• greenhouse gas
• the greenhouse effect

Kids Definition

greenhouse

1 of 2 noun

green·​house -ˌhau̇s 

: a glassed enclosure for cultivation of plants

greenhouse

2 of 2 adjective

: relating to, causing, or caused by the greenhouse effect

greenhouse warming