Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary
1

mushroom

play
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m; chiefly Northern & Midland -ˌrün; dial ˈmə-shə-ˌrüm, -ˌru̇m, -ˌrün\

Simple Definition of mushroom

  • : a fungus that is shaped like an umbrella; especially : one that can be eaten

Source: Merriam-Webster's Learner's Dictionary

Full Definition of mushroom

  1. 1 a :  an enlarged complex aboveground fleshy fruiting body of a fungus (as a basidiomycete) that consists typically of a stem bearing a pileus; especially :  one that is edible b :  fungus

  2. 2 :  upstart

  3. 3 :  something resembling a mushroom

Examples of mushroom in a sentence

  1. cut up some mushrooms for the salad



Origin and Etymology of mushroom

Middle English musheron, from Anglo-French musherum, musseron, from Late Latin mussirion-, mussirio


First Known Use: 15th century


2

mushroom

verb mush·room

Simple Definition of mushroom

  • : to increase or develop very quickly

  • : to collect wild mushrooms

Source: Merriam-Webster's Learner's Dictionary

Full Definition of mushroom

  1. intransitive verb
  2. 1 a :  to well up and spread out laterally from a central source b :  to become enlarged or extended :  grow

  3. 2 :  to collect wild mushrooms

  4. 3 :  to spring up suddenly or multiply rapidly



MUSHROOM Defined for Kids

1

mushroom

play
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m\

Definition of mushroom for Students

  1. :  a part of a fungus that bears spores, grows above ground, and suggests an umbrella in shape




2

mushroom

play
verb mush·room

Definition of mushroom for Students

mushroomed

mushrooming

  1. :  to appear or develop suddenly or increase rapidly <The town's population has mushroomed.>




Medical Dictionary

mushroom

play play
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m\

Medical Definition of mushroom

  1. 1:  an enlarged complex fleshy fruiting body of a fungus (as most basidiomycetes) that arises from an underground mycelium and consists typically of a stem bearing a spore-bearing structure; especially :  one that is edible—compare toadstool

  2. 2:  fungus 1





Seen and Heard

What made you want to look up mushroom? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a representation of something

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

frenetic philistine lazy melancholy
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ