1

mushroom

noun mush·room \ ˈməsh-ˌrüm , -ˌru̇m ; chiefly Northern and Midland US -ˌrün ; dialectal ˈmə-shə-ˌrüm , -ˌru̇m , -ˌrün \
Updated on: 18 Nov 2017

Definition of mushroom

1 a : an enlarged complex aboveground fleshy fruiting body of a fungus (such as a basidiomycete) that consists typically of a stem bearing a pileus; especially : one that is edible
b : fungus
2 : upstart
3 : something resembling a mushroom

Examples of mushroom in a Sentence

  1. cut up some mushrooms for the salad

Recent Examples of mushroom from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mushroom.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of mushroom

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


2

mushroom

verb

Definition of mushroom

intransitive verb
1 a : to well up and spread out laterally from a central source
b : to become enlarged or extended : grow
2 : to collect wild mushrooms
3 : to spring up suddenly or multiply rapidly

Examples of mushroom in a Sentence

  1. Interest in local history is suddenly mushrooming.

  2. Her hobby mushroomed into a thriving business.

  3. He goes mushrooming in the spring every year.

Recent Examples of mushroom from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mushroom.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mushroom

1893



MUSHROOM Defined for English Language Learners

mushroom

noun

Definition of mushroom for English Language Learners

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


mushroom

verb

Definition of mushroom for English Language Learners

  • : to increase or develop very quickly

  • : to collect wild mushrooms


MUSHROOM Defined for Kids

1

mushroom

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

Definition of mushroom for Students

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

2

mushroom

verb

Definition of mushroom for Students

mushroomed; mushrooming
: to appear or develop suddenly or increase rapidly
  • The town's population has mushroomed.

Medical Dictionary

mushroom

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

medical Definition of mushroom

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 : fungus 1


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