if a company penetrates a new market or area, it starts selling goods or services in that market or area:
• The company has been struggling to penetrate the US market.
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penetrate UK US /ˈpenɪtreɪt/ verb [T] MARKETING, COMMERCE
► to begin to sell products or services in a new area or to a new group of customers: »
The company is beginning to penetrate Asian markets.
Financial and business terms. 2012.