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| con·stric·tion [ kən stríkshən ] (plural con·stric·tions) |
noun |
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| Definition: |
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1. process of narrowing: the process of becoming narrower, or of making something narrower
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2. narrow place: a narrow place or part
  A constriction in the tube prevents the mercury from returning to the bulb.
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3. medicine feeling of tightness: a feeling of tightness or pressure, especially in the chest or throat
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4. restriction: something that severely restricts somebody's freedom of movement, action, or expression
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5. zoology suffocation by squeezing: the process of squeezing animals caught as prey until they suffocate, as many snakes do
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