contain
Americanverb (used with object)
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to hold or include within its volume or area.
This glass contains water.
This paddock contains our best horses.
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to be capable of holding; have capacity for.
The room will contain 75 persons safely.
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to have as contents or constituent parts; comprise; include.
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to keep under proper control; restrain.
He could not contain his amusement.
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to prevent or limit the expansion, influence, success, or advance of (a hostile nation, competitor, opposing force, natural disaster, etc.).
to contain an epidemic.
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to succeed in preventing the spread of.
efforts to contain water pollution.
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Mathematics. (of a number) to be a multiple of; be divisible by, without a remainder.
Ten contains five.
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to be equal to.
A quart contains two pints.
verb
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to hold or be capable of holding or including within a fixed limit or area
this contains five pints
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to keep (one's feelings, behaviour, etc) within bounds; restrain
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to consist of; comprise
the book contains three different sections
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military to prevent (enemy forces) from operating beyond a certain level or area
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maths
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to be a multiple of, leaving no remainder
6 contains 2 and 3
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to have as a subset
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Synonym Usage
Contain, accommodate, hold, express the idea that something is so designed that something else can exist or be placed within it. Contain refers to what is actually within a given container. Hold emphasizes the idea of keeping within bounds; it refers also to the greatest amount or number that can be kept within a given container. Accommodate means to contain comfortably or conveniently, or to meet the needs of a certain number. A passenger plane that accommodates 50 passengers may be able to hold 60, but at a given time may contain only 30.
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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containsimple
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containssimple
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have containedperfect
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has containedperfect
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am containingprogressive
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are containingprogressive
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is containingprogressive
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have been containingperfect progressive
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has been containingperfect progressive
Past
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containedsimple
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had containedperfect
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was containingprogressive
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were containingprogressive
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had been containingperfect progressive
Future
Etymology
Origin of contain
First recorded in 1250–1300; Middle English conte(y)nen, from Anglo-French contener, Old French contenir, from Latin continēre, equivalent to con- con- + -tinēre, verb suffix of tenēre “to hold” ( see tenet)
Explanation
The verb contain has many shades of meaning but it often describes something that's held back or held in by something. Kids on the last day of school may find it hard to contain their glee when summer officially starts. Picture Times Square on New Year's Eve. People can barely contain — or hold back — their excitement at being there. They clutch cups that contain — or hold — hot drinks that help them stay warm. The police set up barriers to contain — or restrain — the crowd to keep everyone under control. The next morning, the heaps of trash on the street will contain — or include — streamers, party hats, and cups.
Vocabulary lists containing contain
The SAT: Multiple-Meaning Words, List 4
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PARCC: Language of the Test (Grade 11)
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The New SAT: Multiple-Meaning Words
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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.
Multiple fire crews were working to contain it before it reached the surrounding vegetation.
From Los Angeles Times • Jun. 21, 2026
They contain nitrates, high levels of sodium and saturated fats, and aromatic hydrocarbons that increase the risk of cancer, hypertension, and heart disease.
From MarketWatch • Jun. 21, 2026
Following exposure to OLE, microglia activated pathways involved in clearing beta-amyloid and regained their ability to move toward plaques and contain them.
From Science Daily • Jun. 19, 2026
This week, Patel once again couldn’t contain himself from posting.
From Slate • Jun. 19, 2026
Page after page of the minutes of the early years of the Royal contain variations on the themes of ‘Mr Hooke produced...’
From "The Scientists" by John Gribbin
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.
