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marshmallow

American  
[mahrsh-mel-oh, -mal-oh] / ˈmɑrʃˌmɛl oʊ, -ˌmæl oʊ /

noun

  1. a sweetened paste or confection made from the mucilaginous root of the marsh mallow.

  2. a similar confection, usually soft and spongy, made from gum arabic or gelatin, sugar, corn syrup, and flavoring.


marshmallow British  
/ ˌmɑːʃˈmæləʊ /

noun

  1. a sweet of a spongy texture containing gum arabic or gelatine, sugar, etc

  2. a sweetened paste or confection made from the root of the marsh mallow

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is the Marshmallow Test? The Marshmallow Test is a famous psychological test performed on young children in the 1960s linking delayed gratification (a treat right now … or two later?) to success later in life. A 2018 replication notably concluded, though, that socioeconomic background significantly influenced the ability of children to delay their gratification. So the test was biased.

Other Word Forms

Derived Forms

Etymology

Origin of marshmallow

First recorded in 1905–10; see origin at marsh mallow

Explanation

A marshmallow is a sweet, soft treat. Marshmallows are sometimes melted and turned into a sugary topping for ice cream or a filling for baked goods. Marshmallows are made of gelatin and sugar, with a dusty powdered sugar surface, and they squish like a sponge when you squeeze or bite down on them. Marshmallows can be toasted over a fire to turn them slightly crisp on the outside and melty within, and sandwiched between graham crackers with chocolate to make a "s'more." The original 19th century marshmallows were made from a plant called mersc-mealwe (marsh mallow plant) in Old English.

Keep Reading on Vocabulary.com

Vocabulary lists containing marshmallow

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Then there’s bruising running back Mark Fletcher Jr., who runs through 300-pound defenders as if they were made of marshmallow.

From The Wall Street Journal • Jan. 11, 2026

These Glasgow institutions reduced Martin to marshmallow and Brendan Rodgers to a grim spectacle banging on about Honda Civics and Ferraris after a defeat at Dundee.

From BBC • Nov. 1, 2025

The cookie will be filled with “delicious flavors of chocolate, marshmallow and toasted almond–flavored crème,” the organization said in a news release.

From Los Angeles Times • Sep. 9, 2025

But even his nonsensible marshmallow responses to her didn’t matter.

From Salon • Aug. 1, 2024

She licked a marshmallow from her upper lip.

From "Case of the Sneaky Snowman: Nancy Drew and the Clue Crew, #5" by Carolyn Keene

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