Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “mushroom”

mushroom

noun [C]  /ˈmʌʃ·rum, -rʊm/ us  

mushroom noun [C] (PLANT)

any one of many types of fast-growing fungus (= plants without leaves or flowers) with a round top and short stem, many of which are used as food: wild mushrooms mushroom soup a pizza with mushrooms

mushroom

verb [I]  /ˈmʌʃ·rum, -rʊm/ us  

mushroom verb [I] (GROW)

to grow quickly: If your business were to mushroom, would you be happy?
(Definition of mushroom from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of mushroom?
Add Cambridge dictionaries to your browser to your website

Definitions of “mushroom” in other dictionaries

Word of the Day

first:

(a person or thing) coming before all others in order, time, amount, quality, or importance

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More