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English definition of “stress”

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stress

noun uk   /stres/ us  

stress noun (WORRY)

B1 [C or U] great worry caused by a difficult situation, or something that causes this condition: People under a lot of stress may experience headaches, minor pains, and sleeping difficulties. Yoga is a very effective technique for combating stress. the stresses and strains of the job stress-related illness
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stress noun (PRONUNCIATION)

B2 [C or U] the way that a word or syllable is pronounced with greater force than other words in the same sentence or other syllables in the same word: The meaning of a sentence often depends on stress and intonation. When "insert" is a verb, the stress is on the second syllable, but when it is a noun, the stress is on the first syllable.
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stress noun (FORCE)

[C or U] specialized physics, engineering a force that acts in a way that often changes the shape of an object: Computers work out the stresses that such a craft will encounter in flight. Jogging puts a lot of stress on your knee joints. He needs to have an operation for a stress fracture in his foot.

stress noun (EMPHASIS)

C1 [U] emphasis: During his speech, he laid particular stress on the freedom of the press.

stress

verb uk   /stres/ us  

stress verb (EMPHASIZE)

B2 [T] to give emphasis or special importance to something: [+ (that)] He is careful to stress (that) the laboratory's safety standards are the best in the country. I'd just like to stress the importance of neatness and politeness in this job.
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stress verb (PRONOUNCE)

B2 [T] to pronounce a word or syllable with greater force than other words in the same sentence or other syllables in the same word, or to play a musical note with greater force than others in a group: In the word "engine" you should stress the first syllable.
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stress verb (WORRY)

[I] to feel worried and nervous: Don't stress over it - we'll soon sort it out.
Phrasal verbs
(Definition of stress from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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