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English definition of “penetrate”

penetrate

verb (MOVE INTO)    /ˈpen.ɪ.treɪt/
[I or T] to move into or through something: Amazingly , the bullet did not penetrate his brain . In a normal winter , the frost penetrates deeply enough to kill off insect eggs in the soil .Crossing and moving through [ T] to succeed in becoming part of an organization , etc. and working within it : The organization had been penetrated by a spy . The company has been successful in penetrating overseas markets this year (= it has started selling its products in them). [I or T] to reach or affect something: These changes had not yet penetrated as far west as the mountains of Merioneth. [T] If your eyes penetrate somewhere dark , you manage to see through it: Our eyes couldn't penetrate the dark /the gloom of the inner cave .Using the eyesEyesight, glasses and lensesThe eye and surrounding areaPerceptive [T] When a man penetrates his partner during sex , he puts his penis into his or her body .
(Definition of penetrate verb (MOVE INTO) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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