plural onions
1
: a widely cultivated Asian herbaceous plant (Allium cepa) of the amaryllis family that has a pungent edible bulb and that is closely related to the garlic, chive, and leek
also
: its bulb
2
: any of various usually ornamental alliums (such as Allium amplectens or A. caeruleum) related to the onion
Examples of onion in a Sentence
The recipe calls for chopped onions.
He is growing onions in the garden this year.
The recipe calls for chopped onion.
Recent Examples on the Web
To be precise: bison liver pate with sweet onion jam on a puffed garlic chip.
—
Miguel Otárola, The Denver Post, 28 Jan. 2025
Add the tomatoes, onion, and celery; cook, stirring often, until tomatoes and onions are softened, about 10 minutes.
—Yvette Zuniga Jemison, Southern Living, 28 Jan. 2025
The menu also includes five burger options, which can be piled high with add-on toppings including bacon, grilled onions or peppers, jalapenos and even chili to customize your meal.
—Heidi Finley, Charlotte Observer, 27 Jan. 2025
Firm cubes of cheese are cooked with onions and red bell peppers, simmered in a creamy tomato sauce full of warm spices.
—Arika Herron, Axios, 27 Jan. 2025
See all Example Sentences for onion 
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Miguel Otárola, The Denver Post, 28 Jan. 2025
Add the tomatoes, onion, and celery; cook, stirring often, until tomatoes and onions are softened, about 10 minutes.
—Yvette Zuniga Jemison, Southern Living, 28 Jan. 2025
The menu also includes five burger options, which can be piled high with add-on toppings including bacon, grilled onions or peppers, jalapenos and even chili to customize your meal.
—Heidi Finley, Charlotte Observer, 27 Jan. 2025
Firm cubes of cheese are cooked with onions and red bell peppers, simmered in a creamy tomato sauce full of warm spices.
—Arika Herron, Axios, 27 Jan. 2025
See all Example Sentences for onion
Dictionary Entries Near onion
Cite this Entry
“Onion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onion. Accessed 2 Feb. 2025.
Copy CitationKids Definition
onion
noun
on·ion
ˈən-yən 
: a widely grown Asian herb related to the lilies and having edible bulbs that have a sharp odor and taste and are used as a vegetable and to season foods
also
: its bulb
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