The following words and phrases when used in this chapter shall have, unless the context clearly indicates otherwise, the meanings given to them in this section:
"Hospital plan corporation." A corporation not-for-profit engaged in the business of maintaining and operating a nonprofit hospital plan.
"Nonprofit hospital plan." A plan whereby for prepayment, periodical or lump sum payment hospitalization or related health benefits may be provided to subscribers to such plan.
40 Pa.C.S. § 6101