No.. by default the first tab is "open". Your other option is to follow the instructions in the readme for creating subtabs for your product description content or changing the tab order so that a "shorter" tab appears first.
That may be your only option though.. Not sure of another workaround.
I believe the tab names are driven by the store's language definition files.. (not at my home PC to confirm.. going off memory here..) You can use the developers toolkit in the store admin to search for the text in the tab names and see which files contain that text string, and change the appropriate language file accordingly..
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