blob
Americannoun
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a globule of liquid; bubble.
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a small lump, drop, splotch, or daub.
A blob of paint marred the surface.
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an object, especially a large one, having no distinct shape or definition.
a blob on the horizon.
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a dull, slow-witted, and uninteresting person.
verb (used with object)
noun
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a soft mass or drop, as of some viscous liquid
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a spot, dab, or blotch of colour, ink, etc
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a indistinct or shapeless form or object
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a slang word for condom
verb
Other Word Forms
Etymology
Origin of blob
1400–50; late Middle English; apparently expressive formation
Explanation
A blob is a spot, drop, or a shapeless mass of something, You can't just put blobs of paint on your canvas and call it art! Blob is often used interchangeably with glob or drop. You might top your apple pie with blobs of whipped cream, or put a blob of toothpaste on your toothbrush. And if your map appears to be just blobs of color, you might want to put your glasses on and look again. Blob first appeared as a verb in the 15th century, meaning "to mark with drops or granules," a close relation of bubble.
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.
You can pick a green blob, a buff, tattooed Zane, gamer girl Kira or even virtual versions of real people such as the esports star Faker.
From The Wall Street Journal • Jan. 11, 2026
In one version of the task, for example, looking left meant the animal judged the blob to be a bunny, while looking right signaled that it looked more like a "T."
From Science Daily • Nov. 28, 2025
But all this extra heat in the so-called "warm blob" may have the opposite effect in the UK, possibly making a colder start to winter more likely, some researchers believe.
From BBC • Oct. 17, 2025
Unfortunately, the blob proved to be much larger, and more influential, than anyone realized.
From Slate • Apr. 9, 2025
I took the sonogram to the kitchen table and tried to determine which part of the amorphous blob was my future niece or nephew.
From "We Are the Ants" by Shaun David Hutchinson
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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.