strain

¹ American  

[streyn] / streɪn /

verb (used with object)

• strains,
  present (3rd person singular)
• strained,
  past participle,  past
• straining
  present participle

1. to draw tight or taut, especially to the utmost tension; stretch to the full.

   to strain a rope.

   Synonyms:

   extend

2. to exert to the utmost.

   to strain one's ears to catch a sound.

3. to impair, injure, or weaken (a muscle, tendon, etc.) by stretching or overexertion.

4. to cause mechanical deformation in (a body or structure) as the result of stress.

5. to stretch beyond the proper point or limit.

   to strain the meaning of a word.

6. to make excessive demands upon.

   to strain one's luck; to strain one's resources.

7. to pour (liquid containing solid matter) through a filter, sieve, or the like in order to hold back the denser solid constituents.

   to strain gravy.

   Synonyms:

   sieve, filter

8. to draw off (clear or pure liquid) by means of a filter or sieve.

   to strain the water from spinach; to strain broth.

9. to hold back (solid particles) from liquid matter by means of a filter or sieve.

   to strain seeds from orange juice; to strain rice.

10. to clasp tightly in the arms, the hand, etc..

    The mother strained her child close to her breast.

    Synonyms:

    press, embrace, hug

11. Obsolete. to constrain, as to a course of action.

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verb (used without object)

• strains,
  present (3rd person singular)
• strained,
  past participle,  past
• straining
  present participle

1. to pull forcibly.

   a dog straining at a leash.

2. to stretch one's muscles, nerves, etc., to the utmost.

3. to make violent physical efforts; strive hard.

4. to resist forcefully; balk.

   to strain at accepting an unpleasant fact.

5. to be subjected to tension or stress; suffer strain.

6. to filter, percolate, or ooze.

   Synonyms:

   seep

7. to trickle or flow.

   Sap strained from the bark.

noun

1. any force or pressure tending to alter shape, cause a fracture, etc.

2. strong muscular or physical effort.

   Synonyms:

   exertion

3. great or excessive effort or striving after some goal, object, or effect.

4. an injury to a muscle, tendon, etc., due to excessive tension or use; sprain.

   Synonyms:

   wrench

5. Mechanics, Physics. deformation of a body or structure as a result of an applied force.

6. condition of being strained or stretched.

7. a task, goal, or effect accomplished only with great effort.

   Housecleaning is a real strain.

8. severe, trying, or fatiguing pressure or exertion; taxing onus.

   the strain of hard work.

9. a severe demand on or test of resources, feelings, a person, etc..

   a strain on one's hospitality.

10. a flow or burst of language, eloquence, etc..

    the lofty strain of Cicero.

11. Often strains. a passage of melody, music, or songs as rendered or heard.

    the strains of the nightingale.

12. Music. a section of a piece of music, more or less complete in itself.

13. a passage or piece of poetry.

14. the tone, style, or spirit of an utterance, writing, etc..

    a humorous strain.

15. a particular degree, height, or pitch attained.

    a strain of courageous enthusiasm.

strain ² American  

[streyn] / streɪn /

noun

1. the body of descendants of a common ancestor, as a family or stock.

2. any of the different lines of ancestry united in a family or an individual.

3. a group of plants distinguished from other plants of the variety to which it belongs by some intrinsic quality, such as a tendency to yield heavily; breed.

4. an artificial variety of a species of domestic animal or cultivated plant.

5. Microbiology, Pathology. a specific variety of a virus, bacterium, or other microorganism.

   A strain of the virus will have distinct virulent properties as well as a particular immune response.

6. ancestry or descent.

7. hereditary or natural character, tendency, or trait.

   a strain of insanity in a family.

   Synonyms:

   predisposition, vein, streak

8. a streak or trace.

9. a kind or sort.

10. Obsolete. procreation.

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strain ¹ British  

/ streɪn /

verb

1. to draw or be drawn taut; stretch tight

2. to exert, tax, or use (resources) to the utmost extent

3. to injure or damage or be injured or damaged by overexertion

   he strained himself

4. to deform or be deformed as a result of a stress

5. (intr) to make intense or violent efforts; strive

6. to subject or be subjected to mental tension or stress

7. to pour or pass (a substance) or (of a substance) to be poured or passed through a sieve, filter, or strainer

8. (tr) to draw off or remove (one part of a substance or mixture from another) by or as if by filtering

9. (tr) to clasp tightly; hug

10. obsolete (tr) to force or constrain

11. 1. to push, pull, or work with violent exertion (upon)

    2. to strive (for)

    3. to balk or scruple (from)

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noun

1. the act or an instance of straining

2. the damage resulting from excessive exertion

3. an intense physical or mental effort

4. music (often plural) a theme, melody, or tune

5. a great demand on the emotions, resources, etc

6. a feeling of tension and tiredness resulting from overwork, worry, etc; stress

7. a particular style or recurring theme in speech or writing

8. physics the change in dimension of a body under load expressed as the ratio of the total deflection or change in dimension to the original unloaded dimension. It may be a ratio of lengths, areas, or volumes

strain ² British  

/ streɪn /

noun

1. the main body of descendants from one ancestor

2. a group of organisms within a species or variety, distinguished by one or more minor characteristics

3. a variety of bacterium or fungus, esp one used for a culture

4. a streak; trace

5. archaic a kind, type, or sort

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strain Scientific  

/ strān /

1. A group of organisms of the same species, sharing certain hereditary characteristics not typical of the entire species but minor enough not to warrant classification as a separate breed or variety. Resistance to specific antibiotics is a feature of certain strains of bacteria.

2. The extent to which a body is distorted when it is subjected to a deforming force, as when under stress. The distortion can involve a change both in shape and in size. All measures of strain are dimensionless (they have no unit of measure).

3. ◆ Axial strain is equal to the ratio between the change in length of an object and its original length.

4. ◆ Volume strain is equal to the ratio between the change in volume of an object and its original volume. It is also called bulk strain.

5. ◆ Shear strain is equal to the ratio between the amount by which an object is skewed and its length.

6. Compare stress See more at Hooke's law

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Synonym Usage

Strain, sprain imply a wrenching, twisting, and stretching of muscles and tendons. To strain is to stretch tightly, make taut, wrench, tear, cause injury to, by long-continued or sudden and too violent effort or movement: to strain one's heart by overexertion, one's eyes by reading small print. To sprain is to strain excessively (but without dislocation) by a sudden twist or wrench, the tendons and muscles connected with a joint, especially those of the ankle or wrist: to sprain an ankle.

Other Word Forms

Derived Forms

• strainless
  adjective
• strainingly
  adverb
• strainlessly
  adverb

Inflected Forms

Participles

• straining
  present
• strained
  past

Conjugated Forms

Present

• strain
  simple
• strains
  simple
• have strained
  perfect
• has strained
  perfect
• am straining
  progressive
• are straining
  progressive
• is straining
  progressive
• have been straining
  perfect progressive
• has been straining
  perfect progressive

Past

• strained
  simple
• had strained
  perfect
• was straining
  progressive
• were straining
  progressive
• had been straining
  perfect progressive

Future

• will strain
  simple
• will have strained
  perfect
• will be straining
  progressive
• will have been straining
  perfect progressive

Etymology

Origin of strain¹

First recorded in 1250–1300; Middle English streinen (verb), from Old French estrein-, stem of estreindre “to press tightly, grip,” from Latin stringere “to bind, tie, draw tight.” See stringent

Origin of strain²

First recorded before 950; Middle English stren(e), streine “gain, acquisition; sexual intercourse, procreation,” Old English strēon, strīon

Explanation

The noun strain is a stretch, effort, or exertion. You can strain your ankle, or your little brother can strain your patience. This word has many, many meanings. Athletes strain their knees, which strains the emotions of their fans. Usually, you have to strain a little to accomplish anything, like getting an A in math. A strain may also be a line, like a line of ancestry, of thought, or a melodic line in music. Maybe you have to strain to hear the quiet flute in an orchestra. Another meaning is to pass something through a filter, like tea leaves.

Example Sentences

See Examples For:

strain strains strained straining

Opposition centers on water use, air and noise pollution, and the potential for data centers to raise utility bills as they add strain to the grid requiring costly upgrades and new electricity supply.

From Los Angeles Times ● Aug. 29, 2026

It’s been a success, despite one 300-pounder busting through the net around his basketball court and the diving board caving under the strain of a back-flip competition.

From The Wall Street Journal ● Aug. 28, 2026

China is already feeling some consequences from the Strait of Hormuz disruption, adding to economic strain from persistently sluggish domestic consumption.

From Barron's ● Aug. 28, 2026

Curtis Hall Ltd, the company behind the plans, said the development would "not put a strain on the energy grid or water infrastructure".

From BBC ● Aug. 27, 2026

The goal is to have them not sing too far below the staff or too low in their voices, and to not push or strain their voices too far above this range either.

From "Music and the Child" by Natalie Sarrazin

When bacteria are repeatedly exposed to antibiotics, strains that can survive the drugs may spread, making infections more difficult to treat.

From Science Daily ● Aug. 30, 2026

We can’t, of course, say “poor Kyle Tucker” as he strains — less stoically now — to figure it out with the postseason closing in.

From Los Angeles Times ● Aug. 22, 2026

But in what may be a sign of the strains shoppers are under, they’re searching for cheaper goods and supplies.

From The Wall Street Journal ● Aug. 21, 2026

As Sunday night turned into Monday morning, and the strains of fiddles and flutes drifted through the city streets, people hailed the success of Belfast's first ever All-Ireland Fleadh.

From BBC ● Aug. 10, 2026

By a process of genetic selection, the insects are developing strains resistant to chemicals.

From "Silent Spring" by Rachel Carson

He said his activism had strained his relationships within his own community but that he believed Judaism came in many forms.

From Barron's ● Aug. 27, 2026

The charges, in which an additional nine senior current and former Sinaloa officials were also indicted, have strained relations between the two governments.

From The Wall Street Journal ● Aug. 21, 2026

Family relations had been strained since, with July's visit to the King and Queen Camilla being a key development in their relationship.

From BBC ● Aug. 19, 2026

Some participants described it as a tentative move that could help repair the strained relationship between state and federal leaders working on elections.

From Salon ● Aug. 19, 2026

The two boys strained and grunted, and at last they were able to raise Nanuq’s snout above the surface.

From "Two Degrees" by Alan Gratz

They’re straining the grid and making people fret about their utility bills.

From The Wall Street Journal ● Aug. 13, 2026

Instead of straining vegetables and pasta, you can use a colander to achieve a similar effect to that of the pinhole projector.

From BBC ● Aug. 11, 2026

Chief Executive David Zaslav opted not to renew the pricey basketball contract as Warner has been straining to pay down debt brought on by its last merger in 2022.

From Los Angeles Times ● Aug. 6, 2026

Bond markets in the West are straining to contain yields.

From MarketWatch ● Jul. 24, 2026

He had not taken his eyes off me, so I began to pull on my clothes over my pajamas, ears straining for a sound from the secret room.

From "The Hiding Place" by Corrie ten Boom

Related Words

• ache
• anxiety
• bruise
• burden
• injury
• pressure
• sprain
• stress
• tension