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

Every person who plans to enter the greenhouse should register. —Karl Schneider, The Indianapolis Star, 9 May 2024

By investing in tech-savvy food production systems, such as hydroponic greenhouses, Michelle contributed to minimizing the limitations of agriculture and simplified access to unspoiled fresh produce. —William Mullane, USA TODAY, 8 May 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