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- DictionaryPen·e·tra·tion/ˌpenəˈtrāSH(ə)n/
noun
- 1. the action or process of making a way through or into something: "the plant grows in clear, still waters where there is strong sunlight penetration"
- 2. the successful selling of a company's or country's products in a particular market or area: "Japanese import penetration"