moss
1 Americannoun
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mosses
plural
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any tiny, leafy-stemmed, flowerless plant of the class Musci, reproducing by spores and growing in tufts, sods, or mats on moist ground, tree trunks, rocks, etc.
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a growth of such plants.
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any of various similar plants, as Iceland moss or club moss.
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Chiefly Scot. and North England. a swamp or bog.
verb (used with object)
noun
noun
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any bryophyte of the phylum Bryophyta , typically growing in dense mats on trees, rocks, moist ground, etc See also peat moss
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a clump or growth of any of these plants
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any of various similar but unrelated plants, such as club moss, Spanish moss, Ceylon moss, rose moss, and reindeer moss
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a peat bog or marsh
noun
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Kate . born 1974, British supermodel.
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Sir Stirling. born 1929, English racing driver
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Any of various green, usually small nonvascular plants of the division Bryophyta. Mosses, unlike liverworts, have some tissues specialized for conducting water and nutrients. As in the other bryophytes, the diploid sporophyte grows on the haploid gametophyte generation, which supplies it with nutrients. Mosses often live in moist, shady areas and grow in clusters or mats. Sphagnum mosses play a crucial role in the ecology of peat bogs.
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See more at bryophyte
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Any of a number of plants that look like mosses but are not related to them. For instance, reindeer moss is a lichen, Irish moss is an alga, and Spanish moss is a bromeliad, a flowering plant.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of moss
before 1000; Middle English mos ( se ), Old English mos moss, bog; akin to German Moos, Old Norse mȳrr mire
Explanation
Moss is a small green plant that grows, carpet-like, across moist, shady areas. If you see a green furry rock as you hike in a forest, chances are that's moss. Moss forms mats and clumps in wooded spots, and it's unusual in the plant world for several reasons, including the fact that it has no seeds and no real roots. It reproduces through spores and absorbs water through its tiny leaves. Long ago, people used moss to insulate dwellings, but today it's primarily used in gardens. The Old English root is meos, closely related to mos, "bog," which is a damp area where moss might grow.
Vocabulary lists containing moss
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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.
See Examples For:
The hero of bog creation, Ms. Turetsky relates, is sphagnum moss, one of nature’s most efficient sponges.
From The Wall Street Journal ● Oct. 9, 2026
The real engineer of a healthy bog, experts say though, is sphagnum moss.
From BBC ● Sep. 12, 2026
Other species have long legs and live among moss, while some are sturdier frogs adapted to life on the ground.
From Science Daily ● Aug. 30, 2026
With dated production and too many songs that make a good first impression but fail to stick, “Steel Wheels” has gathered moss over the years.
From Los Angeles Times ● Jul. 10, 2026
Then they played a jolly game of croquet, laughing without much reason, and they continued laughing as they relaxed on a carpet of moss.
From "Abel's Island" by William Steig
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Moss KC said it was a "somewhat bleak but candid assessment of the scale of the problem", which Emmett agreed with.
From BBC ● Oct. 12, 2026
His star shone brightly enough for the group to brand its collections "Saint Laurent by Anthony Vaccarello", while celebrity fans from Kate Moss, Dua Lipa, Zoe Saldana and Hailey Bieber gave him cross-generation appeal.
From Barron's ● Oct. 9, 2026
It became a streetwear fixture during the 1990s, when everyone from Kate Moss to Princess Diana to Steve Jobs—not to mention the cast of “Friends”—donned its flagship 501s.
From The Wall Street Journal ● Oct. 4, 2026
The trust said habitat loss and fragmentation were likely to have a bigger impact on the Moss carder than many other species as it typically foraged closer to its nest than most other bumblebees.
From BBC ● Sep. 27, 2026
She doesn't understand how good she has it, Moss thought.
From "Anger Is a Gift" by Mark Oshiro
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Insects, reptiles, trees, lichens and mosses have been killed.
From BBC ● Aug. 8, 2026
"Millipedes were feeding on decaying mosses, decomposed slime, and primordial gunk on the surface of the Earth."
From Science Daily ● Jun. 14, 2026
It says high levels of rainfall, alongside relatively mild temperatures all year round, provide the right environment for rare lichens and mosses.
From BBC ● May 21, 2026
Two projects – one in the Yorkshire Dales and another on Marsden Moor near Huddersfield – are reintroducing mosses to the uplands, which it is hoped will also create diverse habitats for wildlife.
From BBC ● Feb. 8, 2026
I tried some of the mosses that they liked, but decided moss was for the deer.
From "My Side of the Mountain" by Jean Craighead George
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.